Eater of the Dead + Viridian Longbow + Basilisk Collar

Eater of the Dead

Viridian Longbow

Basilisk Collar

How it works

1. Activate Eater of the Dead by tapping it, dealing 1 damage to any nontoken creature an opponent controls.
2. The creature dies due to Eater of the Dead's deathtouch.
3. Activate Eater of the Dead by paying 0, exiling the creature card from its owner's graveyard and untapping Eater of the Dead.
4. Repeat.
5. You may also repeat this loop whenever a creature enters the battlefield under an opponent's control.