Combat Celebrant, Determined Iteration, and Feldon of the Third Path

Prerequisites

• Combat Celebrant in your graveyard
• Determined Iteration on the battlefield
• Feldon of the Third Path on the battlefield
• Feldon does not have summoning sickness
• available

Steps

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

Results

• Infinite combat phases
• Infinite creature tokens with haste
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers