Breath of Fury, Scaled Herbalist, and Dimir Aqueduct

Prerequisites

• Breath of Fury on the battlefield
• Scaled Herbalist on the battlefield
• Dimir Aqueduct in hand

Steps

1. Activate Scaled Herbalist by tapping it, putting Dimir Aqueduct from your hand onto the battlefield
2. Dimir Aqueduct enters the battlefield, triggering itself and the permanent with a landfall ability
3. Resolve the Dimir Aqueduct trigger, returning it from the battlefield to your hand
4. Resolve the landfall trigger, creating a creature token
5. Deal combat damage to an opponent with the creature that has Breath of Fury attached
6. Breath of Fury triggers, causing you to sacrifice the creature it is attached to and then attach Breath of Fury to the creature token from step 4, untap all creatures you control, and get an additional combat phase after this one
7. Repeat each combat phase

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite combat damage
• Infinite combat phases
• Infinite death triggers
• Infinite landfall triggers
• Infinite mana creatures you control can produce
• Infinite creature sacrifice triggers
• Infinite untap of creatures you control