Banishing Knack + Midnight Guard

Mana needed: {U}{U}

WU identity

Commander legal

The 2 combo pieces

How to execute it

  1. Cast Banishing Knack by paying {U}, targeting Midnight Guard.
  2. Activate Midnight Guard by tapping it, returning the creature that costs no mana from the battlefield to your hand.
  3. Cast that creature by paying {0}.
  4. When that creature enters, Midnight Guard triggers, untapping Midnight Guard.
  5. Repeat from step 2.

What the combo produces