Ghired, Conclave Exile, Combat Celebrant, God-Pharaoh's Gift, and Mass Hysteria

Prerequisites

• Ghired, Conclave Exile on the battlefield
• Combat Celebrant in the graveyard
• God-Pharaoh's Gift on the battlefield
• Mass Hysteria on the battlefield
• An opponent can not block your creatures

Steps

1. Move to your combat phase, God-Pharaoh's Gift trigger
2. Resolve God-Pharaoh's Gift by exiling Combat Celebrant from your graveyard and creating a token copy of Combat Celebrant
3. Attack with Ghired and token copy of Combat Celebrant
4. Ghired triggers, creating a copy of Combat Celebrant token
5. Exert Combat Celebrant, untapping all other creatures you control, gaining additional combat phase after this one
6. Repeat from step 4

Results

• Infinite combat phases
• Infinite creature tokens with haste