Ensoul Artifact + Grim Monolith + Voltaic Construct

U identity

Commander legal

The 3 combo pieces

• Ensoul Artifact
• Grim Monolith
• Voltaic Construct

How to execute it

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

What the combo produces

• Infinite colorless mana
• Infinite untap of artifact creatures you control