Mimic, Chittering

Family: Mimic

Large monstrosity (shapechanger), neutral

Armor Class 14 (natural armor)
Hit Points 90 (12d8+18)
Speed 40 ft.

STR	DEX	CON	INT	WIS	CHA
17 (+3)	12 (+1)	15 (+2)	5 (-3)	14 (+2)	8 (-1)

Skills Stealth +5
Damage Immunities acid
Senses darkvision 60 ft., passive Perception 12
Languages Common
Challenge 4 (1,100 XP)

Special Traits

• Shapechanger. The chittering mimic can use its action to polymorph into an object or back into its true, humanoid form. Its statistics are the same in each form. Any equipment it is wearing or carrying isn’t transformed. It reverts to its true form if it dies.
• False Appearance (Object Form Only). While the mimic remains motionless, it is indistinguishable from an ordinary object.
• Grappler. The mimic has advantage on attack rolls against any creature grappled by it.
• Terrible Chatter. When its true form is revealed, the mimic unleashes an endless torrent of high-pitched chattering. Each non-undead creature within 10 feet of the chittering mimic that can hear it must succeed on a DC 14 Wisdom saving throw or be stunned for 1d4 rounds. A stunned target can repeat the saving throw at the end of each of its turns, ending the stunned condition on itself on a success. If a target’s saving throw is successful or the effect ends for it, the target is immune to this chittering mimic’s Terrible Chatter for the next 24 hours.

Actions

• Multiattack. The chittering mimic gets a bonus bite attack after a successful grab.
• Grab. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Escape DC 14.
• Kick. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit: 10 (2d6 + 3) bludgeoning damage.
• Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 20 (3d10 + 3) piercing damage.

About

A chittering mimic is a skilled shapeshifter, able to assume any form from a wooden chest to a village shop. Terrifyingly nimble, with a voracious gaping maw and standing on two powerful gangly legs, the chittering mimic is a deadly foe, able to grab prey with sinewy arms. Unleashes a stream of gibberish when attacking its prey that stuns and disorients.

Keen dungeon delvers soon learn to listen for the chittering mimic’s breathing before opening any unguarded chests.