Stealer of Faces (5e Equipment)

Weapon (dagger), very rare

You gain a +2 bonus to attack and damage rolls made with this magic weapon. Whenever you attack a creature of the same size and basic shape as you with this dagger and you reduce it to 0 hit points, you physically transform into that creature, gaining its appearance for 1 hour. Meanwhile the creature loses any distinguishing features, becoming a "generic" or totally average member of its species and sex; recognizing it is impossible. Both of these changes end early if any of the following happens:

• The creature ceases to be dead or unconscious.
• You reduce a different creature to 0 hit points with the dagger.

Note that you can't control the power of this dagger. When you use it to reduce a creature to 0 hit points, you steal its appearance regardless of whether you want to or not.