The Eternity Elevator + Voltaic Construct + Xenic Poltergeist

B identity

Commander legal

The 3 combo pieces

• The Eternity Elevator
• Voltaic Construct
• Xenic Poltergeist

How to execute it

1. Animate The Eternity Elevator using Xenic Poltergeist.
2. Activate The Eternity Elevator by tapping it, adding {C}{C}{C}.
3. Activate Voltaic Construct by paying {2}, untapping The Eternity Elevator.
4. Repeat from step 2.

What the combo produces

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