Metalworker + Rings of Brighthearth + Voltaic Key

C identity

Commander legal

The 3 combo pieces

What must be in place

2 or more artifacts in hand.
Metalworker does not have summoning sickness.

How to execute it

  1. Activate Metalworker and reveal 2 artifacts to add {C}{C}{C}{C} to your mana pool.
  2. Activate Voltaic Key to untap Metalworker.
  3. Rings of Brighthearth triggers allowing you to copy Voltaic Key's ability and untap Voltaic key with the copy.
  4. Repeat.

What the combo produces