Caesar, Legion's Emperor, and Breath of Fury

Prerequisites

• Caesar, Legion's Emperor on the battlefield
• Breath of Fury on the battlefield
• Breath of Fury attached to another creature you control that does not have summoning sickness
• An opponent cannot block creatures you control
• You control at least one additional creature excluding the creature that has Breath of Fury attached

Steps

1. Declare the creature with Breath of Fury attached as an attacker
2. Caesar triggers, causing you to sacrifice another creature you control and create two 1/1 Soldier creature tokens with haste that are tapped and attacking
3. Deal combat damage using the creature that has Breath of Fury attached
4. Breath of Fury triggers, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to a Soldier token, then causing you to untap all creatures you control and to get an additional combat phase after this one
5. Repeat each combat phase

Results

• 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