Breath of Fury, and Loyal Apprentice

Prerequisites

• Breath of Fury on the battlefield
• Loyal Apprentice on the battlefield
• Breath of Fury attached to another creature you control that can attack this turn
• An opponent cannot block creatures you control
• You control your commander

Steps

1. At the beginning of your combat phase, Loyal Apprentice triggers, creating a 1/1 Thopter creature token with haste
2. Deal combat damage to an opponent using the creature with Breath of Fury attached
3. Breath of Fury triggers, causing you to sacrifice the creature with Breath of Fury attached, then attach Breath of Fury to the Thopter token, untap all creatures you control and to get an additional combat phase after this one
4. Repeat each combat phase

Results

• Infinite combat damage
• Infinite combat phases
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mana creatures you control can produce
• Infinite sacrifice triggers
• Infinite untap of creatures you control