Wandering Mage, Morselhoarder, and Pir, Imaginative Rascal

Prerequisites

• Wandering Mage on the battlefield
• Morselhoarder on the battlefield
• Pir, Imaginative Rascal on the battlefield
• Morselhorder has at least one -1/-1 counter on it

Steps

1. Activate Morselhorder by removing all -1/-1 counters from it, adding for each counter removed
2. Activate Wandering Mage's third ability by paying and putting two -1/-1 counters on Morselhorder, preventing the next two damage dealt to you this turn
3. Repeat

Results

• Infinite colored mana
• Prevent all damage that would be dealt to you and creatures you control