Chakram Retriever + Invulnerability + Will, Scion of Peace

WU identity

Commander legal

The 3 combo pieces

What must be in place

You have gained 4 or more life this turn.
You control a creature that can tap to produce at least {W}.

How to execute it

  1. Activate Will by tapping it, causing white and blue spells you cast this turn to cost at least {4} less.
  2. Activate a creature by tapping it, adding {W}.
  3. Cast Invulnerability with buyback by paying {W}.
  4. Chakram Retriever triggers, untapping the mana-producing creature.
  5. Resolve Invulnerability.
  6. Repeat from step 2.

What the combo produces