Port Razer, and Helm of the Host

Prerequisites

• Port Razer on the battlefield
• Helm of the Host on the battlefield
• Helm of the Host attached to Port Razer
• An opponent is unable to block Port Razer

Steps

1. At the beginning of combat, Helm of the Host triggers, creating a token copy of Port Razer with haste
2. Declare the 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 get another combat phase after this one
4. Repeat

Results

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