Breath of Fury + Magnus the Red + Frostcliff Siege

Prerequisites

• At least one opponent cannot block creatures you control.

Steps

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