Akki Battle Squad, and Helm of the Host

Prerequisites

• Akki Battle Squad on the battlefield
• Helm of the Host on the battlefield
• You control another modified creature that can attack this turn, and that cannot be blocked and killed by an opponent
• Helm of the Host attached to Akki Battle Squad

Steps

1. At the beginning of your combat phase, Helm of the Host triggers, creating a token copy of Akki Battle Squad with haste
2. Declare another modified creature you control as an attacker
3. Akki Battle Squad triggers, untapping all modified creatures you control and causing you to get an additional combat phase after this one
4. Repeat each combat phase

Results

• Infinite combat phases
• Infinite creature tokens with haste
• Infinite ETB
• Infinite untap of modified creatures you control