Marvin, Murderous Mimic, Pili-Pala, and Whisperer of the Wilds

Prerequisites

• Marvin, Murderous Mimic on the battlefield
• Pili-Pala on the battlefield
• Whisperer of the Wilds on the battlefield

Steps

1. Activate Marvin using Whisperer of the Wilds's ability by tapping it, adding
2. Activate Marvin using Pili-Pala's ability by paying and untapping it, adding one mana of any color
3. Repeat

Results

• Infinite colored mana