Monk Gyatso + Lightning Greaves + Endrider Catalyzer

Monk Gyatso

Lightning Greaves

Endrider Catalyzer

How it works

1. Activate Lightning Greaves' equip ability by paying 0, targeting Endrider Catalyzer.
2. Monk Gyatso triggers. Choose not to airbend Endrider Catalyzer.
3. Resolve Lightning Greaves' ability, attaching it to Endrider Catalyzer.
4. Activate Endrider Catalyzer by tapping it, adding
5. Activate Lightning Greaves' equip ability by paying 0, attaching it to Monk Gyatso.
6. Activate Lightning Greaves' equip ability by paying 0, 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 2.
10. Repeat.

This clever loop turns the zero-cost targeting of Lightning Greaves into a continuous engine for Monk Gyatso and Endrider Catalyzer. By repeatedly shifting the Greaves back and forth, you trigger Monk Gyatso's ability to repeatedly exile and recast Endrider Catalyzer for just {2}. This constant cycling generates an endless stream of creature enters-and-leaves-the-battlefield triggers as well as a massive storm count.