Patron of the Moon, Guildless Commons, and Tiller Engine

Prerequisites

• Patron of the Moon on the battlefield
• Guildless Commons in hand
• Tiller Engine on the battlefield
• available

Steps

1. Pay 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

Results

• Infinite colorless mana
• Infinite landfall triggers