5e Dmg Take 10
The 5e DMG has a short section on “handling mobs:” it has a chart for approximating, out of a group of attacking monsters, how many monsters hit.
Take 10 is actually meant to represent an average die roll. If you can perform a skill check in a calm situation without a penalty for failure, then you'd most likely get at least a 10 on a die roll within 3 attempts (and any unlucky streak will collapse under weight of retries.) Take 20, on the other hand, does require more that amount of time. Average of a d6 is 3.5, average of a d8 is 4.5 and of d12 is 6.5. Assuming a STR of 16 (+3 mod) at 1st level 2 weapon fighting is marginally better than with a 2 handed weapon (10 dmg/rnd vs 9.5). But at 2nd level with action surge the 2-handed weapon fighter averages 19 burst dmg, while the two weapon fighter is at 16.5.
It’s pretty simple: subtract attacker’s hit bonus from the target’s AC. Cross-index that number on the chart. If the number is 1-5, all the attackers hit; if it’s 6-12, 1/2 of them hit; etc., up to 1 in 20 of the attackers hitting on a 20.
I ran a big set-piece battle yesterday: 8 mid-level PCs and 10 gnomes against 20+ drow and other assorted creatures, including a drow spider chariot and a sinister angel. With a wizard and a sorcerer PC and two drow wizards, all slinging fireballs, the mob attacks weren’t much of a factor. With all those fireballs, what I COULD have used was rules for mob saving throws.
If I’d thought about it, I’d have realized that the same chart can be used for saving throws. Instead of subtracting attack bonus from AC, subtract saving throw bonus from DC, and use the chart as normal. For instance, a fireball save DC of 15, minus the drow dex save (+2) is 13, which, according to the chart, means that 1/3 of the drow succeed on their saving throw (and probably survive with 1 or 2 HP left).
In fact, this same chart can be used for ability/skill checks (how many orcs managed to climb the wall? DC minus skill bonus) or any other d20 roll.
To me, it seems this is all you need to run fairly simple battles with dozens or hundreds of creatures per side. The amount of HP tracking is not excessive: for instance, in this unit of 50 ogres, 24 have 15 damage and the other 25 have 30 damage. (For ease of bookkeeping, assume that melee attacks always target the most-damaged creature.)
You might also care about the base size of big units. I assumed that a close-packed formation of 10 Medium troops took up the size of one Large creature. I’d say that 25 troops are Huge and 50 are Gargantuan.
If we do any bigger-scale battles, I might find other rules that I need (after all, the Chain Mail rules are much longer than this blog post) but right now, this is looking pretty good for running big D&D skirmishes.
You might be curious: if you use the treasure tables in the 5e DMG, how rich will the characters be? This becomes important if you want to do things like give characters XP for GP found.
Here’s the breakdown: for each tier (a band of 4-6 levels) I’ve written a script which presents the average monetary treasure and provides a sample roll on the treasure table. (I’m using ~ as shorthand for “on average” here.)
What we see here is that, for each tier, average hoard value is multiplied by 10. At first glance, this seems like a problem. This is not granular at all, and treasure values don’t change for 6 levels at a time?? A closer look reveals that it might work quite well. The treasure quantity is tied to the monster’s level, not the PC’s level. If PCs take on monsters of varying but surmountable difficulties, they will naturally fight steadily increasing numbers of higher-tier monsters as they level up. For instance, if you imagine a group who fights monsters of their level +1d6-2, these big steps turn naturally into a nice curve. Not only it is a smooth average, it’s one with extremely varied rewards. That means that there’s lots of the “wow! I’m rich!” moments that make slot machines so popular.
Knowing how much money characters are “expected” to earn helps us gauge a lot of things about the economy. For me, the most important questions are a) when can characters afford domains? and b) can I give out 1 XP per 1 GP and ignore monster XP?
5e Dmg Take 10 Hours
When will the players be afford to buy castles? Because of 1e tradition, I want people to be able to afford domains at around level 10, so I might price them at a few tens of thousands of GP. At that price, a tenth-level party, which will probably have picked up a few third-tier hoards, will be able to start affording them.
What about 1 GP = 1 XP? There’s no rules for that in the DMG, and you want to have some way to match GP to XP to figure out how long it will take to level. At straight GP to XP, are we looking at a full campaign taking, like, a few weeks or a few decades?
Well, according to the “standard” expectations of treasure hordes found per career, a 20th-level party will have discovered about 3 million GP, at a rate of about 3 treasure hordes per character level. It takes 255,000 XP to get to level 20, so that hoard is enough for about 8 characters to get to level 20. That means that, at level 20, GP=XP is in the right ballpark, but a little high.
5e Dmg Take 10 Days
How does 1 GP=1 XP fare at lower levels? It takes 300 XP to get to level 2, which means that the party has to find 1 tier-1 treasure hoard per character. That will take a while, considering that level 1 is supposed to be a training level. Tier-one treasures will generally net about 100 XP for each character in a four-person party, which makes advancement pretty slow. Tier-two treasures (monster level 5+) provide 1000 XP each, and become necessary for advancement at around character level 3. Tier-three treasures (monster level 11+) provide 10k XP each, and characters of level 6+ really need one or more tier-three treasure in order to advance in level. High-level characters need four or five such finds, which means that high levels take a lot more time to accrue. No one needs a tier-4 treasure (level 17+): its 100k XP would take a party of 17th-level characters to level 20 in one shot (assuming you could gain more than 1 level per treasure).
Take 10 Magazine
In short, the treasure expectations almost-but-not-quite work for 1XP=1GP. For that trick, the treasure finds really do need to be a little more regular. Here’s the fix I propose:
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Whenever a monster is in the top half of a tier (levels 3-4, 8-10, 14-16) double the monetary treasure. This eases the speed bumps that slow down character advancement at certain points.
Ignore tier-four treasures. A steady diet of doubled tier-three treasures will allow high-level characters to advance after every two hoards (or once after a dragon hoard). A tier-four treasure of 300,000 GP might be fun but it is not necessary for character advancement.