Patron of the Moon + Trench Behemoth + Tiller Engine

Patron of the Moon

Trench Behemoth

Tiller Engine

How it works

1. Activate up to two lands by tapping them, adding at least 1.
2. Activate Trench Behemoth twice by returning two lands from the battlefield to your hand.
3. Activate Patron of the Moon by paying 1, putting both lands from your hand onto the battlefield tapped
4. When the lands enter, Tiller Engine triggers, untapping the lands.
5. Repeat.