Encroaching Mycosynth + Freed from the Real + Steelswarm Operator

U identity

Commander legal

The 3 combo pieces

• Encroaching Mycosynth
• Freed from the Real
• Steelswarm Operator

How to execute it

1. Activate Steelswarm Operator's second ability by tapping it, adding {U}{U} that can only be spent to activate abilities of artifacts.
2. Activate Freed from the Real by paying {U}, untapping Steelswarm Operator.
3. Repeat.

What the combo produces

• Infinite blue mana that can only be spent to activate abilities of artifacts
• Infinite blue mana that can only be spent to cast artifact spells