Horobi, Death's Wail, Thornbite Staff, and Bloodthirsty Ogre

Prerequisites

• Horobi, Death's Wail on the battlefield
• Thornbite Staff on the battlefield
• Bloodthirsty Ogre on the battlefield
• Thornbite Staff attached to Bloodthirsty Ogre
• Bloodthirsty Ogre does not have summoning sickness
• You control a Demon

Steps

1. Activate Bloodthirsty Ogre's second ability by tapping it, targeting any creature
2. Horobi triggers, destroying that creature
3. When the creature dies, Bloodthirsty Ogre triggers, untapping itself
4. Repeat
5. You may also repeat this loop whenever a creature enters the battlefield under an opponent's control

Results

• Destroy all creatures that enter the battlefield under an opponent's control
• Destroy any number of creatures opponents control