The Jolly Balloon Man, Combat Celebrant, and Determined Iteration

Prerequisites

• The Jolly Balloon Man on the battlefield
• Combat Celebrant on the battlefield
• Determined Iteration on the battlefield
• available

Steps

1. Activate The Jolly Balloon Man by paying and tapping it, creating a token copy of Combat Celebrant that is a 1/1 Balloon with flying and haste
2. At the beginning of your combat phase, Determined Iteration triggers, creating a copy of the Combat Celebrant token
3. Declare the Combat Celebrant token as an attacker, choosing to exert it as it attacks
4. It triggers, causing you to untap all other creatures you control and get an additional combat phase after this one
5. Repeat from step 2 each combat phase

Results

• Infinite ETB
• Infinite LTB
• Infinite combat damage
• Infinite combat phases
• Infinite death triggers
• Infinite mana creatures you control can produce
• Infinite sacrifice triggers
• Infinite untap of creatures you control