Soltari Guerrillas, and Willbreaker

Prerequisites

• Soltari Guerrillas on the battlefield
• Willbreaker on the battlefield

Steps

1. Activate Soltari Guerrillas by paying , targeting any creature an opponent controls
2. Willbreaker triggers, causing you to gain control of that creature for as long as you control Willbreaker
3. Repeat
4. You may also repeat this loop whenever a creature enters the battlefield under an opponent's control

Results

• Gain control of all creatures
• Gain control of all creatures that enter the battlefield under an opponent's control