Horobi, Death's Wail, Dross Scorpion, Mycosynth Lattice, and Liquimetal Coating

Prerequisites

• Horobi, Death's Wail on the battlefield
• Dross Scorpion on the battlefield
• Mycosynth Lattice on the battlefield
• Liquimetal Coating on the battlefield

Steps

1. Activate Liquimetal Coating by tapping it, targeting any creature an opponent controls
2. Horobi triggers, destroying that creature
3. When the creature dies, Dross Scorpion triggers, untapping Liquimetal Coating
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