Equilibrium + Krark-Clan Ironworks + Urtet, Remnant of Memnarch + Urza's Incubator

WUBRG identity

Commander legal

The 4 combo pieces

What must be in place

"Myr" chosen with Urza's Incubator.
You have a Myr card in hand with mana value two or less that can be cast for {0} due to Urza's Incubator.
You control a nontoken Myr with mana value two or less that can be cast for {0} due to Urza's Incubator.

How to execute it

  1. Cast the Myr with mana value two or less in your hand by paying {0} due to Urza's Incubator.
  2. Urtet and Equilibrium trigger.
  3. Resolve the Urtet trigger, creating a 1/1 Myr artifact creature token.
  4. Activate Krark-Clan Ironworks by sacrificing the Myr token, adding {C}{C}.
  5. Resolve the Equilibrium trigger, causing you to pay {1} to return the Myr with mana value two or less currently on the battlefield to your hand.
  6. Repeat an arbitrarily large number of times.
  7. At the beginning of your combat phase, Urtet's second ability triggers, untapping all Myr you control.

What the combo produces