Moritte of the Frost + Triton Cavalry + Leyline Immersion + Instill Energy

Moritte of the Frost

Triton Cavalry

Leyline Immersion

Instill Energy

How it works

1. Activate Moritte by tapping it, adding 3 that can only be spent to cast spells.
2. Cast Instill Energy by paying , targeting Moritte.
3. Moritte triggers, returning Leyline Immersion to your hand from the battlefield.
4. Activate Instill Energy by paying 0, untapping Moritte.
5. Cast Leyline Immersion by paying 3, targeting Moritte.
6. Moritte triggers, returning Instill Energy to your hand from the battlefield.
7. Repeat.