The Flesh 2014
CR 4 aberration
Medium aberration, neutral evil
Can move through a space as narrow as 1 inch wide with o squeezing.
Can breathe air and water.
Can mimic the sounds and voice of its assumed form. A creature that hears these sounds can tell they are imitations with successful DC 14 Wis (Insight) check.
Regains 5 hp at the start of its turn. If it takes acid or fire this trait doesn’t function at the start of its next turn. Dies only if it starts its turn with 0 hp and doesn’t regenerate.
Bonus Actions
Consumes corpse of Med or smaller Humanoid or Beast within 5 ft. and transforms into it. Stats other than size are the same in new form. Any items worn/carried meld into new form. Can't activate use wield or otherwise benefit from any of its equipment. It reverts to its true aberrant form if it dies makes a Manipulate Flesh attack or uses Assume Form while transformed.
Source: Tome of Beasts 3 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details