Basalt Monolith + Biomancer's Familiar + Myr Welder

GU identity

Commander legal

The 3 combo pieces

• Basalt Monolith
• Biomancer's Familiar
• Myr Welder

How to execute it

1. Activate Myr Welder using Basalt Monolith's first ability by tapping it, adding {C}{C}{C}.
2. Activate Myr Welder using Basalt Monolith's second ability by paying {1}, untapping it.
3. Repeat.

What the combo produces

• Infinite colorless mana