Disa the Restless, Breath of Fury, and The Fire Crystal

Prerequisites

• Disa the Restless on the battlefield
• Breath of Fury on the battlefield
• The Fire Crystal on the battlefield

Steps

1. Deal combat damage to an opponent using the creature that has Breath of Fury attached, triggering Breath of Fury and Disa the Restless's second ability
2. Resolve the Disa the Restless trigger, creating a Tarmogoyf creature token
3. Resolve the Breath of Fury trigger, causing you to sacrifice the creature it is attached to and attach it to the Tarmogoyf token, then causing untap all creatures you control and to get an additional combat phase after this one
4. Repeat each combat phase

Results

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