Bolas's Citadel + Mortuary + Ravenous Intruder + Shield Sphere

BR identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Ravenous Intruder by sacrificing Shield Sphere
  2. When Shield Sphere dies, Mortuary triggers, putting Shield Sphere from your graveyard onto the top of your library.
  3. Resolve the Ravenous Intruder ability.
  4. Cast Shield Sphere from the top of your library by paying 0 life.
  5. Repeat.

What the combo produces