Breath of Fury, Death Tyrant, and Lavaleaper

Prerequisites

• Breath of Fury on the battlefield
• Death Tyrant on the battlefield
• Lavaleaper on the battlefield

Steps

1. Deal combat damage using the creature that has Breath of Fury attached
2. Breath of Fury triggers, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to any creature you control except Death Tyrant, then causing you to untap all creatures you control and to get an additional combat phase after this one
3. When the creature that had Breath of Fury attached dies, Death Tyrant triggers, creating a 2/2 Zombie creature token
4. Repeat each combat phase

Results

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