Purple Worm
Gargantuan monstrosity · CR 15 · 13,000 XP
18 AC · 247 HP
Roll the Purple Worm
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Stat block
- Type
- Gargantuan monstrosity, unaligned
- Armor Class
- 18
- Hit Points
- 247 (15d20 + 90)
- Speed
- 50 ft., burrow 50 ft.
- Challenge
- 15 (13,000 XP), proficiency +5
- Senses
- blindsight 30 ft., tremorsense 60 ft., passive perception 9
- Languages
- None
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 28 | 7 | 22 | 1 | 8 | 4 |
Purple Worm odds against your Armor Class
Chance to hit, then average damage per attack once misses and critical hits are counted.
| Attack | AC 12 | AC 14 | AC 15 | AC 16 | AC 18 | AC 20 |
|---|---|---|---|---|---|---|
| Bite (+14) | 95% 22 dmg | 95% 22 dmg | 95% 22 dmg | 95% 22 dmg | 85% 19.8 dmg | 75% 17.5 dmg |
| Tail Stinger (+14) | 95% 50.6 dmg | 95% 50.6 dmg | 95% 50.6 dmg | 95% 50.6 dmg | 85% 45.4 dmg | 75% 40.3 dmg |
| Full turn (2 attacks) | 72.6 dmg | 72.6 dmg | 72.6 dmg | 72.6 dmg | 65.3 dmg | 57.9 dmg |
Purple Worm hit points
The stat block uses the average, 247. Rolled, 15d20 + 90 lands anywhere from 105 to 390.
| Hit points | Chance |
|---|---|
| 176 or more | >99% |
| 248 or more | 50% |
| 319 or more | <1% |
| 362 or more | <1% |
Traits
Tunneler. The worm can burrow through solid rock at half its Burrow Speed and leaves a 10-foot-diameter tunnel in its wake.
Actions
Multiattack. The worm makes one Bite attack and one Tail Stinger attack.
Bite. Melee Attack Roll: +14, reach 10 ft. Hit: 22 () Piercing damage. If the target is a Large or smaller creature, it has the Grappled condition (escape DC 19), and it has the Restrained condition until the grapple ends.
Tail Stinger. Melee Attack Roll: +14, reach 10 ft. Hit: 16 () Piercing damage plus 35 () Poison damage.
Bonus actions
Swallow. Strength Saving Throw: DC 19, one Large or smaller creature Grappled by the worm (it can have up to three creatures swallowed at a time). Failure: The target is swallowed by the worm, and the Grappled condition ends. A swallowed creature has the Blinded and Restrained conditions, has Total Cover against attacks and other effects outside the worm, and takes 17 () Acid damage at the start of each of the worm’s turns. If the worm takes 30 damage or more on a single turn from a creature inside it, the worm must succeed on a DC 21 Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, each of which falls in a space within 5 feet of the worm and has the Prone condition. If the worm dies, any swallowed creature no longer has the Restrained condition and can escape from the corpse using 20 feet of movement, exiting Prone.
Other CR 15 monsters
Adult Bronze Dragon
Adult Green Dragon
Mummy LordThis page includes material from the System Reference Document 5.2.1 (“SRD 5.2.1”) by Wizards of the Coast LLC, available at dndbeyond.com/srd. The SRD 5.2.1 is licensed under the Creative Commons Attribution 4.0 International License. The averages, odds and tables are ours.