Avatar of Woe, and Thornbite Staff

Prerequisites

• Avatar of Woe on the battlefield
• Thornbite Staff on the battlefield
• Thornbite Staff attached to Avatar of Woe
• Avatar of Woe does not have summoning sickness

Steps

1. Activate Avatar of Woe by tapping it, destroying target creature
2. The creature dies, triggering Avatar of Woe, untapping it
3. Repeat
4. You may also repeat this loop whenever a creature enters the battlefield

Results

• Destroy any number of creatures
• Destroy any number of creatures that enter the battlefield