Gibbering Mouther

Gibbering Mouther

Medium aberration · CR 2 · 450 XP

9 AC · 52 HP

Roll the Gibbering Mouther

Bite
Blinding Spittle DC 10 DEX

Press a roll button. The dice land here.

Stat block

Type
Medium aberration, chaotic neutral
Armor Class
9
Hit Points
52 (7d8 + 21)
Speed
20 ft., swim 20 ft.
Challenge
2 (450 XP), proficiency +2
Condition immunities
Prone
Senses
darkvision 60 ft., passive perception 10
Languages
None
STRDEXCONINTWISCHA
10
8
16
3
10
6

Gibbering Mouther odds against your Armor Class

Chance to hit, then average damage per attack once misses and critical hits are counted.

AttackAC 12AC 14AC 15AC 16AC 18AC 20
Bite (+2)55%
4.2 dmg		45%
3.5 dmg		40%
3.2 dmg		35%
2.8 dmg		25%
2.1 dmg		15%
1.4 dmg

Gibbering Mouther hit points

The stat block uses the average, 52. Rolled, 7d8 + 21 lands anywhere from 28 to 77.

28: 0.00%29: 0.00%30: 0.00%31: 0.00%32: 0.01%33: 0.02%34: 0.04%35: 0.08%36: 0.14%37: 0.24%38: 0.37%39: 0.56%40: 0.82%41: 1.14%42: 1.54%43: 2.01%44: 2.56%45: 3.15%46: 3.77%47: 4.40%48: 4.99%49: 5.52%50: 5.95%51: 6.26%52: 6.41%53: 6.41%54: 6.26%55: 5.95%56: 5.52%57: 4.99%58: 4.40%59: 3.77%60: 3.15%61: 2.56%62: 2.01%63: 1.54%64: 1.14%65: 0.82%66: 0.56%67: 0.37%68: 0.24%69: 0.14%70: 0.08%71: 0.04%72: 0.02%73: 0.01%74: 0.00%75: 0.00%76: 0.00%77: 0.00%
28chance of each total for 7d8 + 2177
Hit pointsChance
40 or more99%
53 or more50%
65 or more2%
72 or more<1%

Traits

Aberrant Ground. The ground in a 10-foot Emanation originating from the mouther is Difficult Terrain.

Gibbering. The mouther babbles incoherently while it doesn’t have the Incapacitated condition. Wisdom Saving Throw: DC 10, any creature that starts its turn within 20 feet of the mouther while it is babbling. Failure: The target rolls to determine what it does during the current turn: 1–4. The target does nothing. 5–6. The target takes no action or Bonus Action and uses all its movement to move in a random direction. 7–8. The target makes a melee attack against a randomly determined creature within its reach or does nothing if it can’t make such an attack.

Actions

Bite. Melee Attack Roll: +2, reach 5 ft. Hit: 7 () Piercing damage. If the target is a Medium or smaller creature, it has the Prone condition. The target dies if it is reduced to 0 Hit Points by this attack. Its body is then absorbed into the mouther, leaving only equipment behind.

Blinding Spittle. Dexterity Saving Throw: DC 10, each creature in a 10-foot-radius Sphere centered on a point within 30 feet. Failure: 7 () Radiant damage, and the target has the Blinded condition until the end of the mouther’s next turn.

Other CR 2 monsters

Allosaurus Animated Rug of Smothering Ankheg Awakened Tree Azer Sentinel Bandit Captain Berserker Black Dragon Wyrmling Bronze Dragon Wyrmling Centaur Trooper Cultist Fanatic Druid

This 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.