Breath of Fury + Fires of Yavimaya + Seraphic Steed

Prerequisites

• An opponent cannot block creatures you control.

Steps

1. 1Declare the creature with Breath of Fury attached and Seraphic Steed as attackers.
2. 2Seraphic Steed triggers, creating a creature token.
3. 3Deal combat damage using the creature that has Breath of Fury attached.
4. 4Breath of Fury triggers, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to the creature token, then causing you to untap all creatures you control and to get an additional combat phase after this one.
5. 5Repeat each combat phase.

Effects

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