Patron of the Moon + Tiller Engine + Izzet Boilerworks

Patron of the Moon

Tiller Engine

Izzet Boilerworks

How it works

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