Marvin, Murderous Mimic, Soliton, and Faeburrow Elder

Prerequisites

• Marvin, Murderous Mimic on the battlefield
• Soliton on the battlefield
• Faeburrow Elder on the battlefield
• undefined

Steps

1. Activate Marvin using Faeburrow Elder's ability by tapping it, adding
2. Activate Marvin using Soliton's ability by paying , untapping it
3. Repeat

Results

• Infinite non-blue mana of colors among permanents you control