Voltaic Construct, Axebane Guardian, and Liquimetal Torque

Prerequisites

• Voltaic Construct on the battlefield
• Axebane Guardian on the battlefield
• Liquimetal Torque on the battlefield

Steps

1. Cause Axebane Guardian to become an artifact using Liquimetal Torque
2. Activate Axebane Guardian by tapping it, adding at least
3. Activate Voltaic Construct by paying , untapping Axebane Guardian
4. Repeat from step 2

Results

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