Orthion, Hero of Lavabrink, Priest of Urabrask, and Aggravated Assault

Prerequisites

• Orthion, Hero of Lavabrink on the battlefield
• Priest of Urabrask on the battlefield
• Aggravated Assault on the battlefield
• Orthion does not have summoning sickness
• available

Steps

1. Activate Orthion's second ability by paying and tapping it, creating five token copies of Priest of Urabrask with haste
2. When the token Priest of Urabrasks enter the battlefield, they trigger, adding fifteen
3. Activate Aggravated Assault by paying , untapping all creatures you control and causing you to get an additional combat and main phase after this one
4. Repeat

Results

• Infinite combat phases
• Infinite copies of creatures you control
• Infinite creature tokens with haste
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mana creatures you control can produce
• Infinite red mana
• Infinite sacrifice triggers
• Infinite untap of creatures you control