Bolas's Citadel + Hangarback Walker + Mortuary

B identity

Commander legal

The 3 combo pieces

How to execute it

  1. Cast Hangarback Walker either from your hand by paying {0} or from the top of your library by paying 0 life.
  2. Hangarback Walker enters and dies as a state-based action due to having 0 toughness.
  3. Mortuary triggers, putting Hangarback Walker from your graveyard onto the top of your library.
  4. Repeat.

What the combo produces