Cannibalize

You devour the remains of a fallen fleshed creature. Immediately after using this bonus action and at the start of up to two of the following rounds, you roll a random die from the "Zombie Dice" game. 

A "brain" die heals you for 1 hit point, a "steps" die means that you cannot attempt a heal this turn and an "impact" die means that the piece of flesh is lost, and the spell must be attempted again.

You need to have at least a free hand to grab onto the piece of flesh and maintain this bonus action, otherwise the spell is lost.