Marvin, Murderous Mimic, Morphling, and Selvala, Eager Trailblazer

Prerequisites

• Marvin, Murderous Mimic on the battlefield
• Morphling on the battlefield
• Selvala, Eager Trailblazer on the battlefield
• undefined

Steps

1. Activate Marvin using Selvala's ability by tapping it, adding at least
2. Activate Marvin using Morphling's ability by paying , untapping it
3. Repeat

Results

• Infinite colored mana