Arbor Adherent + Marvin, Murderous Mimic + Morphling

GU identity

Commander legal

The 3 combo pieces

• Arbor Adherent
• Marvin, Murderous Mimic
• Morphling

How to execute it

1. Activate Marvin using Arbor Adherent's ability by tapping it, adding at least {U}{U}{U}{U}.
2. Activate Marvin using Morphling's ability by paying {U}, untapping it.
3. Repeat.

What the combo produces

• Infinite colored mana