Badgermole Cub + Bello, Bard of the Brambles + Khalni Gem + Voltaic Construct

RG identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Khalni Gem by tapping it, adding two mana.
  2. Badgermole Cub triggers, adding at least one additional mana.
  3. Activate Voltaic Construct by paying {2}, untapping Khalni Gem which is an artifact creature due to Bello.
  4. Repeat any number of times.

What the combo produces