Monk Gyatso, Lightning Greaves, and Endrider Catalyzer

Prerequisites

• Monk Gyatso on the battlefield
• Lightning Greaves on the battlefield
• Endrider Catalyzer on the battlefield

Steps

1. Activate Lightning Greaves' equip ability by paying , targeting Endrider Catalyzer
2. Monk Gyatso triggers
3. Choose not to airbend Endrider Catalyzer
4. Resolve Lightning Greaves' ability, attaching it to Endrider Catalyzer
5. Activate Endrider Catalyzer by tapping it, adding Activate Lightning Greaves' equip ability by paying , attaching it to Monk Gyatso
6. Activate Lightning Greaves' equip ability by paying , targeting Endrider Catalyzer
7. Monk Gyatso triggers, airbending Endrider Catalyzer
8. The Lightning Greaves ability fizzles due to no longer having a legal target
9. Cast Endrider Catalyzer from exile by paying
10. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite storm count