Infantry Shield, Phyrexian Altar, and Aggravated Assault

Prerequisites

• Infantry Shield on the battlefield
• Phyrexian Altar on the battlefield
• Aggravated Assault on the battlefield

Steps

1. Declare the creature that has Infantry Shield attached as an attacker
2. The creature triggers, creating a number of 1/1 Warrior creature tokens that are tapped and attacking equal to the creature's power
3. During your postcombat main phase, activate Phyrexian Altar five times by sacrificing five Warriors, adding
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 LTB
• Infinite ETB
• Infinite colored mana
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite combat phases
• Infinite creature tokens
• Infinite untap of creatures you control
• Infinite mana creatures you control can produce