Crab Umbra + Empowered Autogenerator + Myr Welder

U identity

Commander legal

The 3 combo pieces

• Crab Umbra
• Empowered Autogenerator
• Myr Welder

How to execute it

1. Activate Myr Welder using Empowered Autogenerator's ability by tapping it, putting a charge counter on it and adding {U} for each charge counter on it.
2. Activate Crab Umbra by paying {2}{U}, untapping Myr Welder.
3. Repeat.

What the combo produces

• Infinite colored mana