Marvin, Murderous Mimic, Simic Ragworm, and Harabaz Druid

Prerequisites

• Marvin, Murderous Mimic on the battlefield
• Simic Ragworm on the battlefield
• Harabaz Druid on the battlefield
• You control at least two Allies
• Marvin does not have summoning sickness

Steps

1. Activate Marvin using Harabaz Druid's ability by tapping it, adding at least
2. Activate Marvin using Simic Ragworm's ability by paying , untapping it
3. Repeat

Results

• Infinite colored mana