Breath of Fury + Urabrask's Forge

Prerequisites

• An opponent cannot block creatures you control.

Steps

1. 1At the beginning of your combat phase, Urabrask's Forge triggers, creating a creature token.
2. 2Deal combat damage using the creature that has Breath of Fury attached. Breath 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.
3. 3Repeat each combat phase.

Effects

• 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
• Infinitely powerful creature until end of turn