Xarsarin, Death's Knell

Deathtouch, Vigilance

Toll The Bell: If a creature would be put into the graveyard from the battlefield, you may pay {1} for each creature that would die this way. If you do, exile it instead and put a +1/+1 counter on target creature you control.

Artifacts and enchantments you control have indestructible for as long as Xarsarin, Death's Knell remains on the battlefield.