Chatterlome 2014
CR 7 fiend
Medium fiend, lawful evil
The chatterlome has advantage on saving throws against spells and other magical effects.
Actions
The chatterlome makes four chisel attacks.
Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage.
The chatterlome magically teleports up to 120 feet into a box, chest, wardrobe, or other wooden container with a lid or door. The chatterlome can hide inside the container as a bonus action after teleporting. If the chatterlome uses this action while inside a container, it can teleport into another container within range or it can teleport back to the Hells. If it teleports to the Hells, it can't return to the Material Plane until it is summoned.
Source: Tome of Beasts 2 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details