Aya of Alexandria, Breath of Fury, Mycosynth Lattice, and Lavaleaper

Prerequisites

• Aya of Alexandria on the battlefield
• Breath of Fury on the battlefield
• Mycosynth Lattice on the battlefield
• Lavaleaper on the battlefield

Steps

1. Deal combat damage using the creature that has Breath of Fury attached
2. Breath of Fury and Aya of Alexandria trigger
3. Resolve the Aya of Alexandria trigger, creating a 1/1 Assassin creature token
4. Resolve the Breath of Fury trigger, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to the Assassin 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 ETB
• Infinite LTB
• Infinite combat damage
• Infinite combat phases
• Infinite death triggers
• Infinite mana creatures you control can produce
• Infinite sacrifice triggers
• Infinite untap of creatures you control