Breath of Fury, Sun-Blessed Guardian // Furnace-Blessed Conqueror, and Roar of Resistance

Prerequisites

• Breath of Fury on the battlefield
• Sun-Blessed Guardian // Furnace-Blessed Conqueror on the battlefield
• Roar of Resistance on the battlefield
• An opponent cannot block creatures you control
• Breath of Fury attached to another creature you control
• The creature with Breath of Fury attached and Furnace-Blessed Conqueror do not have summoning sickness

Steps

1. Declare Furnace-Blessed Conqueror and the creature with Breath of Fury attached as attackers
2. Furnace-Blessed Conqueror triggers, creating a tapped and attacking token copy of itself
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 the Furnace-Blessed Conqueror 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