Brago, King Eternal, Combat Celebrant, and Fervor

Prerequisites

• Brago, King Eternal on the battlefield
• Combat Celebrant on the battlefield
• Fervor on the battlefield
• An opponent cannot block Brago and Combat Celebrant

Steps

1. Declare Brago and Combat Celebrant as attackers, choosing to exert Combat Celebrant as it attacks
2. Combat Celebrant triggers, untapping all other creatures you control and to get an additional combat phase after this one
3. Deal combat damage to an opponent using Brago
4. Brago triggers, blinking Combat Celebrant
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