Gibbering Mouther 5e | D&D Monsters Guide

The gibbering mouther is a frightening creature that looks as though it had been plucked from a lunatic’s nightmares.

However, even though it is not evil, it is thirsty for bodily fluids and appears to prefer the blood of intelligent creatures.

Gibbering mouthers have an approximate size of three feet across and three to four feet in height. It weighs about 200 pounds.

Medium aberration, neutral

Armor Class: 9
Hit Points: 67 (9d8 + 27)
Speed: 10ft., swim 10ft.

STR – 10 (+0)
DEX – 8 (- 1)
CON – 16 (+3)
INT 3 – (-4)
WIS – 10 (+0)
CHA – 6 (-2)

Condition Immunities: prone

Senses: darkvision 60ft., passive Perception 10

Languages:

Challenge: 2 (450 XP)

Aberrant Ground: The ground in a 10-foot radius around the mouther is doughlike difficult terrain.

Each creature that starts its turn in that area must succeed on a DC 10 Strength saving throw or have its speed reduced to 0 until the start of its next turn.

Gibbering: The mouther babbles incoherently while it can see any creature and isn’t incapacitated.

Each creature that starts its turn within 20 feet of the mouther and can hear the gibbering must succeed on a DC 10 Wisdom saving throw.

On a failure, the creature can’t take reactions until the start of its next turn and rolls a d8 to determine what it does during its turn. On a 1 to 4, the creature does nothing.

On a 5 or 6, the creature takes no action or bonus action and uses all its movement to move in a randomly determined direction.

On a 7 or 8, the creature makes a melee attack against a randomly determined creature within its reach or does nothing if it can’t make such an attack.

Actions

Multiattack: The gibbering mouther makes one bite attack and, if it can, uses its Blinding Spittle.

Bites: Melee Weapon Attack: +2 to hit, reach 5 ft., one creature. Hit: 17 (5d6) piercing damage. If the target is Medium or smaller, it must succeed on a DC 10 Strength saving throw or be knocked prone. If the target is killed by this damage, it is absorbed into the mouther.

Blinding Spittle (Recharge 5-6): The mouther spits a chemical glob at a point it can see within 15 feet of it. The glob explodes in a blinding flash of light on impact.

Each creature within 5 feet of the flash must succeed on a DC 13 Dexterity saving throw or be blinded until the end of the mouther’s next turn.

Frequently Asked Question of Gibbering Mouther

A Gibbering Mouther is an interesting monster, but most people are curious about it, so they usually ask a few questions about it. Here are the answers:

1. How Big Is A Gibbering Mouther?

An average gibbering mouther measures about three feet across and is between three and four feet high.

2. Can Gibbering Mouther Hear?

Mouthers babble incoherently, even though they are not incapacitated and can see any creature. When a creature starts its turn within 20 feet of the mouther and hears the gibbering, it must make a DC 10 Wim saving throw.

3. How Do You Beat Gibbering Mouther?

The gibbering mouther is immune to being knocked prone, but it still has poor Strength, Dexterity, Wisdom, and Charisma, which are all fairly common abilities for saving throws.

4. What Are Gibbering Mouthers?

Mouthers babble incoherently while they are capable of seeing any creature and are not incapacitated.

The DC 10 Wisdom saving throw must be successful for each creature that begins its turn within 20 feet of the mouther and can hear the gibbering.

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