D&D analysis of some crazy ad in the subway

May 16th, 2014

There were about 1000 copies of this promotional flyer in my subway car:

revjohn1

click to enlarge

This guy’s clearly a snake oil salesman trying to prey on those in need. And he wastes a lot of paper. But I’ll say this for him.

He’s a level 11 cleric.

Here’s the spell breakdown:

revjohn2

click to enlarge

a unified notation for ascending and descending AC

May 1st, 2014

I like to make system-neutral stuff. I don’t particularly like writing “AC 8 (12)” or “AC 12 (8)” or “AC: as leather armor”. Here’s my proposal for a terse way to write any-edition Armor Class: Just write the AC bonus. Thus:

AC: +6

I think it’s pretty intuitive that this guy’s AC is 16 in 3e (counting up from 10), AC 4 in 1e (counting down from 10), and AC 3 in Basic (counting down from 9).

This system doesn’t collide with any other notation. “AC: -6” has meaning in other systems but “AC: +6” doesn’t.

It also works within the expectations of each edition.

  • 3e+ prefers addition to subtraction. Converting +2 to 12 is barely even addition; it’s more like squinting.
  • Old editions don’t see what’s so hard about subtraction.
  • Let’s throw another system in here. ACKS uses ascending-from-0 AC. So all it has to do is ignore the plus sign.

    Monster publishers: if you like it, start using it. If it needs a name, I suggest “Unified AC Notation” and you can link to this page.

  • stand up for the little guy

    April 24th, 2014

    You may have heard about the fcc’s latest threat to net neutrality.

    It’s worth it for us, as blog readers and writers, to make our voice heard over this particular issue. We benefit from living in this special time in history when people can easily communicate with each other without having their conversation moderated by third parties. We don’t need to hope that our little communiques get into the Forum in Dragon Magazine, or wait for APA newsletters to be mailed by overworked enthusiasts. Our exposure to new D&D ideas is not limited to those endorsed by Gary Gygax or Mike Mearls in TSR- or Wizards- published books.

    Here is the email I sent to FCC chairman Tom Wheeler (Tom.Wheeler@fcc.gov). I sent similar emails to Mignon.Clyburn@fcc.gov, Jessica.Rosenworcel@fcc.gov, Ajit.Pai@fcc.gov, and Mike.O’Rielly@fcc.gov

    please stand up for net neutrality

    Hi Tom,

    I note with sadness that the FCC is proposing to give “special access” to internet content providers who pay more. In effect, this penalizes the small websites, web resources, startups, and e-businesses that make the internet special.

    I strongly urge you to reconsider this position. Do you want to be the FCC who supports everyone’s equal access to the internet, or the FCC who allows big corporations to squeeze out the little guys?

    Hoping for the best,
    Paul Hughes

    Joesky tax: although net neutrality seems important to me and my hobby now, it might not be the issue that defines the age. In the D&D world, for every ancient threat that is once more rearing its head, there must be a bunch more that never really went anywhere.

    In case your players’ History checks are getting dusty, here’s a dungeon for you. Upon its gate is written, in antique Common, “HE WHO BLEATS THE BLEAT OF COWARDS SHALL BE THE MEAT OF STRONGER MEN.”

    A hard History check reveals that, four hundred years ago, the PCs’ country made peace with a neighboring country. The peace was not universally accepted, and a popular ballad called the peace proclamation “the Bleat of Cowards.” Few now remember the war or the ballad.

    The dungeon was once a compound of rebels who wanted to extend the war. It contains a mix of rotten war equipment, singleminded undead locked in history, and traps.

    Protecting the keep’s treasure is a Magic Mouth which asks a series of seemingly nonsensical questions: “Are ye with Bruno or the King?” “Did Harold die in vain?” “Shall the Cuperdines enter the confines of the city?” Correctly answering the questions requires a) a hard History check to determine the historical context of the question and b) the knowledge that the dungeon’s inhabitants were pro-war. If the players don’t know the answers, they may guess or head back to the city to hit the library.

    If a PC answers a question incorrectly, he or she is turned into a sheep. The Magic Mouth will then recite some gloating speech about “Thus shall your insides match your out, and King Cuperdine shall have mutton for dinner” that really only made sense at the time.

    The sheep curse requires a Dispel Magic or a very hard Arcana check to lift; possibly the sheep PC will have to be taken to the city for expert treatment. If it’s market day, the sheep PC might get mixed up in someone else’s herd! But don’t extend this too far: the sheep player will want his or her body back at some point.

    forbidden chemical elements

    April 17th, 2014

    More old-timey chemistry from Appendix N author A. Merritt:

    What of that radiant unknown element upon the moon mount Tycho? What of that element unknown to us as part of earth which is seen only in the corona of the sun at eclipse that we call coronium?
    -The Moon Pool, 1918

    The Moon Pool is as much sci-fi as it is fantasy or horror, despite its author’s influence on H. P. Lovecraft. It draws on the archaeology and chemistry of its day, much of which is delightfully wrong. Failed historical science is a great source for fantasy.

    So apparently, in the 19th century, scientists thought they’d discovered a new chemical element which only existed in the the sun’s corona. They called it “coronium.” It turns out they were misreading their spectrographs and they were just seeing highly ionized iron. It’s a great name, though: as selenium’s name suggests “moon stuff”, coronium is “crown stuff” or “sun stuff.”

    We all know that, as mithril is super-silver that trumps steel, there must be a super-gold that trumps mithril. Maybe it’s coronium. When the gods take up arms, I bet they draw shining golden swords: at least, in Greek myth, Haephestus is always making gold weapons and armor for people (a shield for Achilles, a breastplate for Hercules, bow and arrow for Apollo.)

    How rare is coronium? Dwarves mine for mithril, but can they even find a coronium vein? My guess is that such weapons are only the gifts of the gods.

    And what of that other unknown element we find glowing green in the far-flung nebulae—green as that we had just passed through—and that we call nebulium?
    -The Moon Pool

    Merritt mentions another fun fake element: nebulum (or nebulium or nephelium), another spectrographic mistake, “discovered” in 1864 by William Huggins. Huggins thought it was an element that only appeared in nebulae. It turned out to be ionized oxygen. Again, nebulum is a great name for a magical material: “cloudstuff.”

    One more Lovecraftian detail about nebulium: its spectrographic light signature wasn’t identified as oxygen right away because scientists thought it was impossible that such super-ionized atoms could exist long enough to emit light. Such an unearthly electron state, impossible except in the voids between the stars, is seriously called a “forbidden line”. It’s forbidden light! That’s reminiscent of Lovecraft’s story “The Colour Out of Space”, where unusual cosmic light causes all sorts of eldritch trouble.

    Nebulium seems like a great counterpart to coronium. It might be used to forge the weapons of the evil cloud giants, or it might cast invisibility on its owners, or it might radiate darkness or even madness. It could even be the strange black metal of drow weapons. It might be the harbringer of beholders, grell, and other creatures of the far realms.

    selenium

    April 10th, 2014

    s13I found this Appendix N pseudoscience in A. Merritt’s 1918 book The Moon Pool:

    My theory is that the moon rock is of some composition sensitive to the action of Moon rays; somewhat as the metal selenium is to sun rays. […] When the light strikes them they release the mechanism that opens the slab, just as you can open doors with sunlight by an ingenious arrangement of selenium-cells.

    Now I didn’t know anything about selenium except vaguely that it’s probably an element. Maybe you know more than me. Maybe you know that it was discovered in 1817, named after the moon, and used in light sensors from the 1870s until the 1970s. Maybe you know that its few commercial uses nowadays include glassblowing and as an ingredient in baby formula. Well, you’re very smart. I had to hit wikipedia to learn all that.

    Here’s why selenium is a nice drop-in in a D&D game.

    It sounds familiar and scientific, without having any specific connotations to most players (unless your players are all smarter than me too). It’s a little more technological-sounding than the traditional D&D magic materials (adamantium, mithril), and so it matches well with the strangely scientific bent that’s demonstrated by D&D dungeon builders, with their elevators, gas traps, and other automatic devices. Its use is an ancient secret of a bygone empire.

    It’s steampunk. It was exciting during the Victorian era: Alexander Graham Bell used it in a photophone, which is a largely forgotten 1870’s version of fiberoptics, and it was still cool in 1918 when Merritt was writing. Like all great steampunk technologies, it’s been superseded by other technologies. (Silicon is a more efficient semiconductor, and polyvinylcarbazol a more efficient photoconductor, than selenium.)

    It’s got a cool name. Selene is the Greek moon goddess’s name that also gave Selune her name. “Selenium” suggests some moonlight-drenched stone, maybe mined on the moon, maybe holy to its goddess, that calls to the heavens. It’s convenient that, in real life as in Merrit’s horror fantasy, it can be used to drive sun-powered (or moon-powered) devices.

    OK, how do you use it in D&D?

    In my last game session, the players captured a giant squid space ship, piloted by mind flayers, with a cargo of selenium in its belly. The PCs sold it to starfaring elves. The elves alloy it with mithril to make +1 mithril weapons. There’s a catch: selenium swords are sensitive to sunlight the same way drow weapons are, and they’re prone to damaging “sun rust”. (This is a further development of an idea I had before.

    You could also use it the way selenium is used in real life, or in The Moon Pool, except magicked up: a selenium sensor can cast a spell under specific light conditions just the way a Magic Mouth can speak words under specific conditions. This ties into another idea I’ve blogged about, an electrum mirror, but with a different metal.

    Selenium could be used to make magic items that only function in moonlight. A selenium sword that’s normal during the day and a +1 glowing sword in moonlight is a nice minor magic item that’ll be valuable to low-level characters.

    Throw a pinch of selenium dust in the air and the light of a full moon shines down, even in a dark dungeon. This could be useful for banishing shadows, spotting werewolves, or summoning fairy creatures.

    Real life selenium is poisonous, but I bet that D&D adventurers carry little vials of selenium powder (“moon dust”). A mouthful of this stuff turns you into a fey creature, which means you’re immune to charm and don’t need to sleep. You don’t need rest either: you’re immune to the effects of exhaustion for a full day. You can hustle all night and day if you have to. Over good roads, you might be able to cover 200 miles. Disadvantage: your blood runs thin. Every time you take an injury, you take 1d4 extra damage. Furthermore, after 24 hours, the exhaustion catches up to you.

    WTF, Mentzer Red Box fighter?

    April 3rd, 2014

    2648721WTF, Mentzer Red Box fighter?

    Where’s the rest of your party? The fighters on the Holmes and Moldvay basic sets brought their wizard friends, and that was against smaller dragons. A wizard would be a big help here. Don’t try to tell me that your wizard is off-screen. That’s a weaselly lie, and I would not expect it of a noble barbarian like you.

    WTF, Mentzer Red Box fighter? According to the bestiary in the Red Box, that Red Dragon has 10 Hit Dice at least – probably more, based on how big it is and how many ewers he has. But let’s say it only has 45 HP. How much damage do you do? 1d8+6, max, if you have 18 Strength and a +3 sword?

    Let’s say you hit every round, and kill him in five rounds. How much damage is it doing to you in the meantime? Its breath weapon does damage EQUAL TO ITS HIT POINTS. Even if you make your saving throw, you take 22 HP of damage on round 1 of combat. And next round it’s going to be a claw/claw/bite, which is not much better. Shouldn’t you tackle some more appropriate solo opponent from the Red Box, like a Crystal Statue or a Thoul?

    What’s your Armor Class anyway, Mentzer Red Box Fighter? Don’t try to tell me that that’s a plate mail mankini you’re wearing. That’s chain mail – if you’re LUCKY. Even with a shield, and 18 Dex to go with your 18 Strength, that makes your AC what, 1? That dragon is hitting you more than half of the time. Over the course of four combat rounds, you’re probably getting tagged with at least 12d8 worth of claw/claw/bite. That’s 54 average damage, for a total of 76 so far.

    WTF, Mentzer Red Box Fighter? How many HP do you have anyway? Don’t tell me you have an 18 Con to go with your 18 Strength and 18 Dex?? Even if you rolled all 5’s on your d8 Hit Dice, you’d need to be at least level 11 to survive 76 damage (after level 9, you only get 2 HP per level).

    OK, so you might beat the dragon. If you have 18 Str, Con, and Dex; a +3 magic sword; you make your saving throw vs breath weapon; and you never miss an attack over five rounds. AND IF YOU’RE LEVEL 11. In which case… what are you doing on the D&D box for characters level 1-3? WTF?

    super-simple naval combat for any edition

    March 28th, 2014

    bpoatyAs promised, here are my naval combat rules. They’re based on two principles:
    1) D&D naval combat should be as D&D as possible, and
    b) any rules subsystem should fill a single sheet of paper at most.

    My basic rules take up less than half a page and could probably fit on a business card. I’ve filled up the page with optional rules: the nautical complications that Patrick O’Brien buffs will expect, from tacking against the wind to acting as ship’s surgeon.

    Download the PDF or read on.

    BASIC RULES

    Ships have Armor Class. AC is the same as leather armor for peaceful/clumsy ships and chain mail for warships/maneuverable ships.

    Ships have Hit Points. Most ships have 1 HP per minimum crew. Warships typically have 30 HP.

    Ships have a speed. 30 feet/round (about 3 mph) is average. Ships have no maneuverability class or facing.

    Ships have initiative. Ships have no initiative bonus. All crew and passengers act on the ship’s initiative.

    Ships fire ranged weapons. Each round, a ship may fire one weapon per 10 max HP. Ballistae do 1d8 damage and catapults 1d10. Attack rolls are made as a level 1 fighter and have the same range as a shortbow. Every 10 passengers may fire 1 volley of arrows (1d6 ship damage).

    Individuals can attack a ship. Divide individual damage by 10, rounding down. Ship weapons do x10 damage to individuals. The DM arbitrates non-damage spells. Ships save as a level 1 fighter.

    Ships collide. Boarding follows normal D&D melee rules. A galley with a ram does 2d10 damage and may sail through a destroyed ship or back up from a whole one.

    Crew die in battle. The crew takes one casualty for each HP of ship damage (half killed, half unconscious at 1 HP).

    SAMPLE SHIPS: HP and speed vary +-50% based on ship quality.
    boat: open boat, raft, keelboat. Spd 20. HP 3. AC as leather.
    longship: Can land on shore. Spd 35. HP 10. AC as chain.
    galley: heavy rowed ship. Spd 30. HP 30. AC as leather.
    sailing ship: merchant ship. Spd 30. HP 20. AC as leather.
    warship: armed sailing ship. Spd 35. HP 30. AC as chain.
    leviathan: Absurdly large ship. Spd 25. HP 50+. AC as chain.
    Technologically advanced ship: Stats as previous ship types, but AC as plate mail, d12 weapons, and/or speed +10.

    And that’s it for the basic rules! Everything further on this page is optional, to be used by the DM when the players start asking about advanced tactics: can we aim at their sails? Can we fire flaming arrows?

    OPTIONAL RULES

    Crit Location: On a critical hit against a ship, the attacker may forego extra damage for one of the following:
    1) Sail Damage: The ship’ speed is slowed by 10 until the crew skips a turn for repairs.
    2) Called Shot: The attack (non-critically) hits a specific character or object.
    3) Weapon Hit: A ship weapon is destroyed.

    Fire: If a flaming weapon crits, or an attacker fumbles a flaming weapon, or the ship rolls 1 on a save vs fire, the ship burns. It takes 1d6 damage on the opponent’s turn. On its turn, its crew has a 50% chance to put out the fire.

    Wind Direction: Occasionally, strong winds affect navigation. Only rowed ships can go directly into strong wind. For instance, in a strong north wind, you can’t sail north (but you can sail NW and NE).

    Officer Actions: This rule is meant to involve multiple players on each turn. On the ship’s initiative, a PC can use his/her turn to take an officer action. If you want important NPC ships to have skilled officers, add +1, +2 or +3 to the ship’s AC, attack rolls, and damage rolls.
    Captain: Order broadside: The captain’s player chooses an enemy to attack this turn. Add the captain’s Int or Cha bonus to the ship’s damage rolls against that enemy. (Pre-Third Edition: Int bonus: 1/2 the number of bonus languages. Cha bonus: 1/4 max henchmen.)
    Master Gunner: Aim weapons: The Master Gunner’s player rolls the ship’s weapon attacks, adding his or her Dex bonus (pre-3e: reaction bonus) to the attack rolls.
    First Officer: Fill in: The first officer may take any officer action that is not being performed this turn.
    Helmsman: Con the helm: The helmsman’s player moves the ship. If the ship moves, add the helmsman’s Dex bonus (pre-3e: AC bonus) to the ship’s AC.
    Ship Surgeon: Operate: Must have clerical/healing skill. The surgeon’s player tracks damage to the ship. If the ship lost any HP last turn, the surgeon restores 1 ship HP.

    Download the PDF

    naval combat rules through the editions

    March 20th, 2014

    BattleofSluysGiven how often ship-to-ship combat appears in adventure fiction, it’s surprising how short a shrift it gets in D&D. In most editions, it takes secondary importance to more esoteric situations like aerial combat and underwater combat. When your ship is menaced by pirates and it’s time to break out the ballistas, it’s often hard to find the relevant rules.

    Here’s how naval combat has fared in the various editions.

    OD&D: For its page count, OD&D is one of the most comprehensive RPGs of all time. After 3 1/2 pages on aerial combat, we get a luxurious 8 pages on naval combat. Boarding, ramming, shearing oars, and maneuvering are covered pretty clearly, and we have very complete stats on each ship type’s crew and its speed in various wind conditions. Missile fire is the least developed aspect: “All missile fire, including the various forms of catapult fire, are as in CHAINMAIL. Catapult hits will do points of damage to ships, and when sufficient points have been scored the ship sinks. Large ships have from 18-24 points of possible damage before sinking, small ships have from 9-15, and a boat but 3 points.”

    Let’s look in CHAINMAIL. The relevant rules are those for catapults besieging castles. A light catapult does exactly 2 points of damage so it will take 9 to 12 hits to sink a large ship. How do you hit?
    1) Set up the battle on a table.
    1) Estimate how many inches away your target is on the table, without measuring, and declare your attack range.
    2) Cut out a circular plastic disc, 2 inches wide, and put it that many inches away from your catapult. If it overlaps the ship mini, you may inflict your 2 points of damage.

    1st Edition: Naval rules get 2 1/2 pages in the DMG, right between aerial combat and underwater combat. First we get an overview of typical D&D ships, which include the drakkar, cog, and caravel, but “the ultimate warship for the purpose of AD&D is the nao” (also called a carrack). We’re trending towards the 14th century here. Although D&D is gunpowder-free, the nao is armed: The crew “consists of 2 or 3 men to work each ballista, 3 or 4 men to handle the catapult and the rest to man the sails.” Each ship type gets its own hit point range: 1-4 for a rowboat and 7-42 for a warship like the nao.

    Now on to the combat rules! There’s plenty of detail on speed and wind direction, and a full column on handling fires. Boarding rules are the usual but totally adequate “use regular D&D combat rules”. The ramming rules are a little undercooked: apart from the fact that “you must strike the other ship at a 60-90 degree angle,” there’s no defense and no reference made to the HP of the ship. I guess it always works: “Depending on the size of the ship and the location and size of the hole, it may take from 1-12 turns before she sinks below the surface of the water.”

    Despite all the ballistae and catapults mentioned in the ship descriptions, we get one sentence on how to use them, halfway through the “Sinking a Ship” section: “It will take several direct hits with a boulder before enough damage is done to cause a merchant ship or a warship to sink (see Hull Values and Siege Engines.)” Once again we have to consult the castle siege section of the rules to adjudicate naval combat.

    Hit determination is fairly simple: ballistae consider everything AC 10, while catapults consider everything AC 0. This is modified for range, wind, size of the target (large ship: +4), etc. Damage is a little tougher. There’s a matrix which compares every material type (wood, hard stone, etc) with every attack type, from Bigby’s Clenched Fist to Trebuchet. A ship is presumably a wooden structure, so a small catapult does exactly 4 points of damage per hit. It will take about 7 hits to sink a warship. Despite the specific rules for a ballista to-hit roll, there is no damage entry for a ballista.

    Basic D&D: The Expert rulebook has a tidy page on Combat at Sea. Ships have speed, AC (from 7 to 9), and Hull Points (similar to HP; a war galley has around 135). “Unless noted otherwise, most giant sea creatures and certain magic attacks will inflict 1 point of hull damage for every 5 points of normal damage.”

    The rules cover catapults but not ballistas (catapults attack as a fighter of a level equal to the number of catapult operators and do 3-18 hull damage), fire (1d6 damage a turn), ramming (attacks as a first level fighter, does as much as 110 hull damage), and boarding (use your existing melee rules). Clearest rules so far.

    2nd Edition: 2E has no naval combat rules in the core rulebooks. The DMG has 4 pages on aerial combat and 2 pages on underwater combat, and a section on siege engines which is remarkably inapplicable to ship-to-ship combat: instead of doing HP of damage, each hit removes cubic feet of material from a wall.

    The first ship-to-ship rules are in the 1992 Forgotten Realms supplement Pirates of the Fallen Stars. My long-held belief is that if your edition’s only rules for something are in a Forgotten Realms book, your edition has no rules for that thing.

    The best 2e rules for naval combat are probably in Spelljammer. Ignore the fact that it’s in space: Spelljammer ships have speed, maneuverability class, facing, armor rating (AC) and hull points (HP). Weapons have a THAC0, variable damage, and range. For the first time, everything I need to resolve a ballista attack, all in one place!

    Spelljammer also has charts for damage to specific parts of the ship, a page and a half on ramming, a column on shearing, and 2 pages on boarding. Instead of saying “use D&D melee rules for boarding,” it presents a mass combat subsystem. And, despite the fact that it’s in space, combat is in 2D!

    2E went on to print large-scale naval combat rules in a Birthright setting sourcebook, and, at the end of its run, “Of Ships and the Sea” in 1997. I haven’t read the latter, but I understand that the rules are complete but cumbersome. If anyone’s got it, can they chime in?

    3rd Edition: 3E has no naval combat in the core books. The PHB includes speed for various ships. The DMG includes rules for aerial combat and underwater combat.

    Vehicle combat (including ships) appears in the 3.0 Arms and Equipment Guide. Instead of ships having hit points or hull points as in previous editions, each ship hull is divided onto many 10x10x10 sections, and the masts are divided into rigging sections. Each has its own hardness and HP. Destroying sections reduces ship effectiveness, and also damages adjoining sections next turn, in a cascade of death that might take several rounds to adjudicate.

    For missile fire we’re again referred to the siege section of the DMG, where we learn that 3e treats a ballista, hilariously, as a Huge crossbow using the weapon size rules, so medium creatures have a -4 to aim it and Small creatures have a -6. It takes about 3 or 4 skill checks to load and fire each siege engine.

    The major 3.5 sourcebook for nautical adventure is Stormwrack. Stormwrack comes with an apology for its rules: “The best way to keep your D&D game running smoothly during a ship-to-ship encounter is to make any naval battle in which the PCs participate into a boarding action as soon as possible.” In third edition, that might be true.

    Stormwrack replaces battlemat combat with a narrative system where only the distance between two ships is important (so it doesn’t work for 3 or more ships.) Instead of sailing around each other, captains make opposed Profession (sailor) checks for “the advantage.” You can’t do anything without The Advantage except try to steal The Advantage, which is also done with the captains’ opposed Profession (sailor) checks. Ramming, grappling, and shearing are all opposed Profession (sailor) checks that you can make if you have advantage. Your Profession (sailor) modifier basically determines the outcome of combat. It’s like if D&D combat used your initiative roll for initiative, to-hit, and armor class, and if you lost initiative you’d never get to take a turn at all.

    4th Edition: No naval combat rules in the core rulebooks (though, as usual, the DMG has rules for underwater and aerial combat).

    Vehicles (including ships) are detailed in Adventurer’s Vault. Vehicles have HP, AC and defenses, so they interact normally with most game rules; HP is scaled to characters, so a “greatship,” for instance, has 400 HP. Vehicles also have facing, which isn’t otherwise a feature of 4e, and, regardless of type, have a turn radius of 90 degrees per turn. Adventurer’s Vault includes rules for crashing and ramming, but I can’t find standard rules for ballista or catapult fire anywhere, even in the siege section of the DMG, since there are no siege rules in 4e.

    Conclusions: Naval combat is usually an afterthought in D&D. It hasn’t cracked the core rulebooks since 1979. When it appears, it’s either incomplete or abstruse. The most elegant and usable rules are, by far, the 1-page rules in the Basic set, with Spelljammer the surprise runner-up. The worst set of rules is 3rd edition, with its honeycomb of interrelated hull sections and its overreliance on one skill.

    Next week I’ll write up my own one-page, any-edition naval combat ruleset.

    how big is stuff, and how much does it weigh?

    March 11th, 2014

    The PCs ask: “Can I lift the life-sized gold statue?” “How much food will fit in the castle’s cellars?” “How many books in the library?” “Can I carry the boat on my back?” “How many coins fit in my backpack?” Dammit, now you have to do calculations.

    Here are six numbers that you can learn to make a ballpark estimate on nearly any weight/volume question. These are useful for quick plausibility calculations when the players try something you didn’t expect. We want memorable numbers, accurate within 20% or so.

    The First Number: Density of water: The first fact you need to know is that a cubic foot of water weighs around 60 pounds. Water is good because the density of the human body is virtually identical to that of water, and we all have a good intuition about how big, say, a 180# person is compared to a 120# person.

    Numbers two through six: Density of Everything Else: There are basically six materials that are useful for D&D. Their weights are given in multiples of water.

    60# cubic foot of water
    2/3x Things that float
    2x Dirt
    3x Stone
    10x Most metal
    20x Gold and platinum

    Now the details:

    Water: Lots of things are around the same density as water, especially things that are mostly water: wine, ice, people, orcs, dragons, and raw meat. Also leather (a meat byproduct), vellum (a leather byproduct) and paper (a vellum competitor) are around the same weight as water.

    Everything that floats: If it floats, and you can use it in D&D, it’s probably around 2/3 the density of water: 40# per cubic foot. Oil, wood, cloth, and common medieval foods like wheat, beans, vegetables, and dried meat are all around this weight. The few lighter substances (sawdust, snow, feathers) don’t come up that much in D&D.

    Dirt: Dirt includes clay (and its byproduct bricks), sand (and its byproduct glass) and soil.

    Stone: If you’re stoned by a medusa, your weight is multiplied by 3.

    Most metal: Metal weight varies: steel is around 8x the density of water; copper and silver are around 9x; lead is 11x. 10x is a convenient and memorable average.

    Gold and platinum: The really valuable metals are around 20x the density of water (gold 19x; platinum 21x).

    Loose packing: Keep in mind that these densities are for solid, or relatively solid, materials. If something is crated, barreled, shelved, packed with straw, loosely piled, or stacked, multiply its volume by x2. If you need aisles, such as in a storeroom or library, multiply by another x2.

    Examples: From these six numbers, and the loose-packing estimates, you can easily calculate the following:

  • Statues: That life-sized statue of a 200# man is 130# in wood, 600# in stone, 2000# in iron, and 4000# in gold. In 3e, you’d need a strength of 25 to drag the gold statue.
  • Storage: Let’s say your castle has a 50x50x10 cellar. You could theoretically pack 25k square feet or 1 million pounds of food in there. At a ration of one pound per day, that would feed 5000 people for six months. But your food is probably stored in aisles of barrels and crates, so you can probably only feed 800 people for six months.
  • Wooden stuff: An oak table, 12″x4″ and 1 inch thick, would be about 4 cubic feet of wood, or 160#. A boat with the same dimensions would use a little more wood for the sides and maybe weigh 200#.
  • Books: A cubic foot of paper (60#) would make 12 5-pound tomes. Shelved and in aisles (/4), that’s, like, 3 books per cubic foot. Doesn’t sound like much, but a 20″x20″ library with 5″ shelves holds 6000 books.
  • Treasure: Let’s say you have a cubic foot of space in your backpack. By volume, you could fit 1200# of solid gold or maybe 600# of loose coinage. That’s 30,000 GP. Of course, your backpack would break under the weight, even if you could lift it.

    References:
    http://www.engineeringtoolbox.com/specific-gravity-solids-metals-d_293.html
    http://www.engineeringtoolbox.com/density-materials-d_1652.html
    http://go.key.net/rs/key/images/Bulk%20Density%20Averages%20100630.pdf
    http://www.loc.gov/today/pr/2002/02-164a.html

  • today is my dying day

    March 5th, 2014

    There’s a family story about my wife as a little girl: while playing with her dolls, she monotoned in a creepy Children of the Corn voice, “The mother said, ‘today is my dying day.’ The mother said, ‘today is my dying day.'”

    Even without the Twilight-Zone-child element, this quote has something eldritch to it. What is this “dying day” which can be identified so presciently? I thought I’d see what D&D content I could get out of it.

    The “Dying Day” is obviously a high elf thing. When they enter the autumn of their lives, high elves learn the day on which their spirit will move on (barring early accidents). Knowing this would bother humans, but high elves seem fine with it. They make ready cheerily for their departure. They might even send craftsy invitations letterpressed on oak leaves: “Save the date: Lunaniel Weatherbow’s dying day is Feb 23 at the Big Tree. INVITATION TO FOLLOW”

    elfyThe deathbed is another high elf tradition. Elves don’t need to sleep (although some do for fun!), so this might be their only bed ever. It’s a big wooden affair with white sheets (symbolizing winter). Young high elves won’t use a bed with white sheets; it’s bad luck.

    A day or two before your dying day, you become too listless to move: you just lie around in your deathbed looking attractively and non-specifically sick. On your dying day, all your friends visit your bedside; you clasp their hands feebly and give them each one last memento: some money, a piece of artwork, your job title, your unfulfilled quests. That’s how high elf inheritance works. If someone can’t make it to your dying day, they don’t get anything. Once you’ve said all your goodbyes, you close your eyes and drift away.

    Some high elves get the urge to hurry the process. A few years or decades before their dying day, they head west, across the sea, to the mysterious homeland of the elves (Elvenhome, Feywild, Faerie, Tir Na Nog, Lyonesse, whatever it’s called in your campaign world). As soon as they reach that shore, they gain +2 Wisdom. But they will never willingly return to the mortal lands. They keep migrating west until they disappear from the world.

    Wood elves? No dying day. They’ve lost that sense. And they think the whole dying-day party is creepy. Half-elves with a high elf parent DO know their dying day, but they inherit their fear of death from their human side, so it drives them CRAZY.

    Here’s how you could use the dying day in a D&D campaign:

  • It would be handy to talk to a certain elf for a quest, but he’s already Gone West. Follow him into elf-land?
  • Your broody half elf character learns his dying day. Something new to brood about!
  • A PC gets a dying day invitation from an old friend. If they attend, they might get presents!
  • The inn has a big party of fancypants elf nobles camping outside, muttering about how they were insulted by the innkeeper. They were given beds with white sheets. Will the PCs smooth things over or incite a riot and profit by the confusion?
  • The PCs stumble on a dying day ceremony in a random clearing. There’s a tradition that everyone who attends should get a gift, so the elf is bound to give something to each PC. Depending on how they act, it might be something nice, or a single gold piece, or an unfulfilled quest (a geas).
  • An NPC elf hires the PCs to help with a dangerous mission. He’s two days away from his dying day, and he’d really like to get there in one piece. Furthermore, he’s too old for this shit.
  • An evil elf decides to hold his dying day revels in the unwilling home of his enemies. Throughout the day, he appears (or sends an illusion or messenger) to each inhabitant, bestowing curses and laughing in a highly obnoxious Phantom of the Opera manner. How are the PCs involved? A month earlier, he sent an ominous Save the Date. The terrified hosts asked the PCs to be on hand to help.