Corridor Monitor + Retraction Helix + Urza, Lord High Artificer + Will, Scion of Peace

Mana needed: {U}{U}

WU identity

Commander legal

The 4 combo pieces

What must be in place

You've gained life this turn.

How to execute it

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

What the combo produces