Hei Bai, Forest Guardian, Phyrexian Altar, and Aggravated Assault

Prerequisites

• Hei Bai, Forest Guardian on the battlefield
• Phyrexian Altar on the battlefield
• Aggravated Assault on the battlefield
• available

Steps

1. Activate Hei Bai by paying and tapping it, creating a 1/1 Spirit creature token for each legendary enchantment you control
2. Activate Phyrexian Altar ten times by sacrificing ten Spirits, adding
3. 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
4. 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