Ghired, Conclave Exile, Combat Celebrant, Flamerush Rider, and Purphoros, Bronze-Blooded

Prerequisites

• Ghired, Conclave Exile on the battlefield
• Combat Celebrant on the battlefield
• Flamerush Rider on the battlefield
• Purphoros, Bronze-Blooded on the battlefield
• An opponent cannot block creatures you control

Steps

1. Declare Flamerush Rider, Combat Celebrant and Ghired as attackers, choosing to exert Combat Celebrant as it attacks
2. Combat Celebrant, Ghired's second ability and Flamerush Rider trigger
3. Resolve the Flamerush Rider trigger, creating a token copy of Combat Celebrant that is tapped and attacking
4. Resolve the Ghired trigger, creating a copy of the Combat Celebrant token
5. Resolve the Combat Celebrant trigger, untapping all other creatures you control and causing you to get an additional combat phase after this one
6. Move to your next combat phase, and declare the Combat Celebrant token created in step 4 and Ghired as attackers, choosing to exert the Combat Celebrant token as it attacks
7. Repeat from step 4
8. Optionally, you may also attack with Flamerush Rider to get infinite copies of any other attacking creatures you control

Results

• Infinite combat phases
• Infinite copies of attacking creatures you control
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mana creatures you control can produce
• Infinite tapped creature tokens
• Infinite untap of creatures you control