Brago, King Eternal, and Aurelia, the Warleader

Prerequisites

• Brago, King Eternal on the battlefield
• Aurelia, the Warleader on the battlefield

Steps

1. Declare Brago and Aurelia as attackers, attacking an opponent unable to block and kill them
2. Aurelia triggers, untapping all creatures you control and causing you to get an additional combat phase after this phase
3. Deal combat damage with Brago and Aurelia
4. Brago triggers, blinking Aurelia
5. Repeat each combat phase

Results

• Infinite blinking
• Infinite combat damage
• Infinite combat phases
• Infinite ETB
• Infinite LTB
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control