Avatar Roku, Firebender, Aggravated Assault, and Leyline Tyrant

Prerequisites

• Avatar Roku, Firebender on the battlefield
• Aggravated Assault on the battlefield
• Leyline Tyrant on the battlefield

Steps

1. Declare a creature as an attacker, triggering Avatar Roku, adding six
2. Move to your postcombat main phase
3. You will not lose the mana due to Leyline Tyrant
4. Activate Aggravated Assault by paying , causing you to untap all creatures you control and to get an additional combat and main phase after this one
5. Repeat

Results

• Infinite combat phases
• Infinite red mana
• Infinite untap of creatures you control
• Infinite mana creatures you control can produce
• Infinitely powerful red creatures you control until end of turn
• Infinite damage to any target