Voltaic Construct, Karn, the Great Creator, and Pyramid of the Pantheon

Prerequisites

• Voltaic Construct on the battlefield
• Karn, the Great Creator on the battlefield
• Pyramid of the Pantheon on the battlefield

Steps

1. Animate Pyramid of the Pantheon using Karn, the Great Creator
2. Activate Pyramid of the Pantheon by tapping it, adding three mana of any color Activate Voltaic Construct by paying , untapping Pyramid of the Pantheon
3. Repeat from step 2

Results

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