Rionya, Fire Dancer, and Port Razer

Prerequisites

• Rionya, Fire Dancer on the battlefield
• Port Razer on the battlefield
• An opponent is unable to block and kill Port Razer

Steps

1. At the beginning of your combat phase, Rionya triggers, creating at least one token copy of Port Razer with haste
2. Declare a Port Razer token as an attacker
3. When the Port Razer token deals combat damage, it triggers, causing you to untap all creatures you control and to get an additional combat phase after this one
4. Repeat

Results

• Infinite combat damage
• Infinite combat phases
• Infinite creature tokens with haste
• Infinite damage
• Infinite ETB
• Infinite LTB
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control