Maliketh, the Black Blade

Damage dealt by Maliketh can not be
healed. When damaging a creature, give that creature a +0/-1 counter for each damage
dealt by Maliketh. All these effects go away
two turns after Maliketh leaves play. All damage dealt by Maliketh can be healed
after these two turns.
"Cower before Maliketh, Marika's Black
Blade."- Maliketh, Eldin Ring