Voltaic Construct, The Blackstaff of Waterdeep, and The Eternity Elevator

Prerequisites

• Voltaic Construct on the battlefield
• The Blackstaff of Waterdeep on the battlefield
• The Eternity Elevator on the battlefield
• available

Steps

1. Animate The Eternity Elevator using The Blackstaff of Waterdeep
2. Activate The Eternity Elevator by tapping it, adding
3. Activate Voltaic Construct by paying , untapping The Eternity Elevator
4. Repeat from step 2

Results

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