Basalt Monolith + March of the Machines + Voltaic Construct

U identity

Commander legal

The 3 combo pieces

• Basalt Monolith
• March of the Machines
• Voltaic Construct

How to execute it

1. Activate Basalt Monolith by tapping it, adding {C}{C}{C}.
2. Activate Voltaic Construct by paying {2}, untapping Basalt Monolith.
3. Repeat.

What the combo produces

• Infinite colorless mana
• Infinite mana artifacts you control can produce
• Infinite untap of artifacts you control