Gemstone Array + Metalworker + Pemmin's Aura

U identity

Commander legal

The 3 combo pieces

What must be in place

Pemmin's Aura attached to Metalworker.
Metalworker does not have summoning sickness.
You have at least two artifact cards in hand.

How to execute it

  1. Activate Metalworker by tapping it, causing you to reveal at least two artifact cards from your hand and add at least {C}{C}{C}{C}.
  2. Activate Gemstone Array's first ability by paying {2}, putting a charge counter on it.
  3. Activate Gemstone Array's second ability by removing a charge counter from it, adding {U}.
  4. Activate Pemmin's Aura's first ability by paying {U}, untapping Metalworker.
  5. Repeat.

What the combo produces