Raph & Mikey, Troublemakers, Breath of Fury, and Lavaleaper

Prerequisites

• Raph & Mikey, Troublemakers on the battlefield
• Breath of Fury on the battlefield
• Lavaleaper on the battlefield

Steps

1. Declare Raph & Mikey and the creature with Breath of Fury attached as attackers
2. Raph & Mikey triggers, revealing a creature card from your library and putting it onto the battlefield 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 the creature put onto the battlefield in step 2, and then causing you to untap all creatures you control and to get an additional combat phase after this one
5. Repeat each combat phase until you have no creatures left in your library

Results

• Near-infinite ETB
• Near-infinite LTB
• Near-infinite combat damage
• Near-infinite combat phases
• Near-infinite death triggers
• Near-infinite sacrifice triggers
• Near-infinite mana creatures you control can produce
• Near-infinite untap of creatures you control