Patron of the Moon + Tiller Engine + Guildless Commons

Patron of the Moon

Tiller Engine

Guildless Commons

How it works

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