Patron of the Moon + Izzet Boilerworks + Horizon Explorer

Patron of the Moon

Izzet Boilerworks

Horizon Explorer

How it works

1. Pay 1 to activate Patron of the Moon, putting Izzet Boilerworks from your hand onto the battlefield untapped due to Horizon Explorer.
2. When Izzet Boilerworks enters, it triggers.
3. Activate Izzet Boilerworks by tapping it, adding two mana.
4. Resolve Izzet Boilerworks's triggered ability, returning it from the battlefield to your hand.
5. Repeat.