Amulet of Mind Popping

Once per combat, you can activate this eerie amulet's power. For up to a minute, your attacks deal an additional 1d4 Psychic damage, but you take 1d4 Psychic damage every turn. If you reduce a creature to 0 hit points while this amulet is active, their head explodes, killing them instantly. The amulet's ability can only be activated while in combat, and it immediately deactivates once combat ends. Furthermore, you can deactivate it's power as a bonus action.

Notes: Damage: Psychic, Damage: Psychic, Heinrich Fullclaw only