Mardu Siegebreaker + Port Razer

Prerequisites

• Port Razer cannot be blocked by an opponent.
• An opponent cannot block and kill creatures you control.
• Port Razer exiled by Mardu Siegebreaker.

Steps

1. 1Declare Mardu Siegebreaker as an attacker, triggering its second ability, creating a token copy of Port Razer that is tapped and attacking.
2. 2Deal combat damage with the Port Razer token, triggering its ability, untapping all creatures you control and causing you to get an additional combat phase after this one.
3. 3Repeat each combat phase.

Effects

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