Agatha of the Vile Cauldron + Basalt Monolith + Myr Welder

RG identity

Commander legal

The 3 combo pieces

• Agatha of the Vile Cauldron
• Basalt Monolith
• 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 at most {2}, untapping it.
3. Repeat.

What the combo produces

• Infinite colorless mana