Brudiclad, Telchor Engineer + Combat Celebrant + Quasiduplicate

Prerequisites

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Steps

1. 1Cast Quasiduplicate by paying , creating a token copy of Combat Celebrant.
2. 2At the beginning of your combat phase, Brudiclad triggers, creating a 2/1 Phyrexian Myr creature token, then choosing to have all tokens you control become copies of the Combat Celebrant token.
3. 3Declare one of the Combat Celebrant copy as an attacker, choosing to exert it as it attacks.
4. 4The Combat Celebrant copy triggers, untapping all other creatures you control and causing you to get an additional combat phase after this one.
5. 5Repeat from step 2.

Effects

• Infinite combat phases
• Infinite damage