Nilyn, Daimon's Hand

Skulk, backstab (You may have this creature enter the battlefield with a -1/-1 counter on it. If you do, it gains deathtouch, and can assign lethal damage to creatures with indestructible as though they don't have indestructible. This creature can't be blocked by creatures with greater power.)
Whenever Nilyn, Daemon's Hand deals combat damage, if it has a -1/-1 counter on it, you may sacrifice a creature. If you do, destroy target infamous or legendary creature.