Corridor Monitor + Retraction Helix + Urza, Lord High Artificer + Urza, Lord Protector

Mana needed: {U}{U}

WU identity

Commander legal

The 4 combo pieces

How to execute it

  1. Cast Retraction Helix by paying {U}, targeting a creature you control that doesn't have summoning sickness.
  2. Cast Corridor Monitor by paying {U} due to Urza, Lord Protector
  3. When Corridor Monitor enters, it triggers, untapping the creature targeted by Retraction Helix.
  4. Activate Urza, Lord High Artificer's first ability by tapping Corridor Monitor, adding {U}.
  5. Activate the creature targeted by Retraction Helix by tapping it, returning Corridor Monitor from the battlefield to your hand.
  6. Repeat from step 2.

What the combo produces