Patron of the Moon, Spelunking, and Golgari Rot Farm

Prerequisites

• Patron of the Moon on the battlefield
• Spelunking on the battlefield
• Golgari Rot Farm in hand
• available

Steps

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

Results

• Infinite black mana
• Infinite green mana
• Infinite landfall triggers
• Infinite card draw
• Infinite draw triggers