Monster Stat Block Generator

How the Monster Stat Block Generator works

How the monster stat block generator balances a creature

Every number on the back of the card comes from the challenge rating. The generator uses the monster-building guidelines for 5th edition to set armour class, hit points, attack bonus, damage per round and saving throw DC for the chosen CR. Hit points land in the right band, then shrink when the creature resists ordinary weapons, so its effective toughness stays on target. Damage is split across the multiattack, a recharge ability and any riders so the total sits in the expected range for that rating.

Size, type and environment

Size sets the hit die, from d4 for Tiny creatures up to d20 for Gargantuan ones, and nudges Strength, Dexterity, Constitution, reach and speed. Creature type shapes the ability scores, damage resistances and immunities, condition immunities, senses, languages, traits, reactions and innate spells. A construct shrugs off poison and charm, an undead drains life, a fey charms and teleports. Environment chooses the name, movement modes such as swimming or climbing, camouflage, the lair and the elemental damage of breath weapons.

Legendary and lair actions

From challenge rating 15 up, and sometimes from 10, the creature becomes legendary. It gains Legendary Resistance, three legendary actions and three lair actions tied to its environment, with save DCs and damage scaled to its rating.

What is on the card

The front holds everything you need to introduce the monster: name, type, alignment, CR and XP, a short description, lore, tactics drawn from its real abilities, where it lives and what it carries. The back is the full stat block, auto-sized to fit one side. Use Copy to paste both sides into your notes.

Licence

Game mechanics follow the System Reference Document 5.1, available under the Creative Commons Attribution 4.0 licence. This tool is not affiliated with or endorsed by Wizards of the Coast.

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