Voltaic Construct, Xenic Poltergeist, and Prismatic Geoscope

Prerequisites

• Voltaic Construct on the battlefield
• Xenic Poltergeist on the battlefield
• Prismatic Geoscope on the battlefield

Steps

1. Animate Prismatic Geoscope using Xenic Poltergeist
2. Activate Prismatic Geoscope by tapping it, adding at least three mana of any color Activate Voltaic Construct by paying , untapping Prismatic Geoscope
3. Repeat from step 2

Results

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