Monk Gyatso, Lightning Greaves, and Elvish Archdruid

Prerequisites

• Monk Gyatso on the battlefield
• Lightning Greaves on the battlefield
• Elvish Archdruid on the battlefield

Steps

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

Results

• Infinite ETB
• Infinite LTB
• Infinite green mana
• Infinite storm count