Patron of the Moon + Tiller Engine + Gruul Turf

Patron of the Moon

Tiller Engine

Gruul Turf

How it works

1. Pay 1 to activate Patron of the Moon, putting Gruul Turf from your hand onto the battlefield.
2. When Gruul Turf enters, it and Tiller Engine each trigger.
3. Resolve Tiller Engine's ability, untapping Gruul Turf.
4. Activate Gruul Turf by tapping it, adding two mana.
5. Resolve Gruul Turf's triggered ability, returning it from the battlefield to your hand.
6. Repeat.