Adamantine Skeleton

This magical skeleton is reinforced with adamantine, one of the hardest substances in existence. When you attune to this skeleton, it replaces your current skeleton, which disappears. While you're attuned to it, any critical hit against you becomes a normal hit, and your unarmed strikes and natural weapons are treated as adamantine weapons.

If your attunement to the skeleton ends, your original skeleton reappears.

Notes: Immunity: Critical Hits, Combat, Warding