Archelos, Lagoon Mystic, Patron of the Moon, and Rakdos Carnarium

Prerequisites

• Archelos, Lagoon Mystic on the battlefield
• Patron of the Moon on the battlefield
• Rakdos Carnarium in hand
• available

Steps

1. Pay to activate Patron of the Moon, putting Rakdos Carnarium onto the battlefield
2. Rakdos Carnarium triggers, targeting itself
3. With the trigger on the stack, tap Rakdos Carnarium for
4. Allow the trigger to resolve, returning Rakdos Carnarium to your hand
5. Repeat

Results

• Infinite black mana
• Infinite landfall triggers
• Infinite red mana