Myr Welder + Prismatic Geoscope + Voltaic Construct

C identity

Commander legal

The 3 combo pieces

• Myr Welder
• Prismatic Geoscope
• Voltaic Construct

How to execute it

1. Activate Myr Welder using Prismatic Geoscope's ability by tapping it, adding at least three mana of any color.
2. If Voltaic Construct is on the battlefield, activate Voltaic Construct by paying {2}, untapping Myr Welder. Otherwise, activate Myr Welder using Voltaic Construct's ability by paying {2}, untapping Myr Welder.
3. Repeat.

What the combo produces

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