Necroduality + Phyrexian Altar + Repository Skaab + Undying Malice

Mana needed: {B}

UB identity

Commander legal

The 4 combo pieces

How to execute it

  1. Cast Undying Malice by paying {B}, targeting Repository Skaab.
  2. Activate Phyrexian Altar by sacrificing Repository Skaab, adding {B}.
  3. When Repository Skaab dies, it triggers, returning it from your graveyard to the battlefield.
  4. When Repository Skaab enters the battlefield, its exploit ability and Necroduality trigger.
  5. Resolve the Necroduality trigger, creating a token copy of it.
  6. When the Repository Skaab token enters the battlefield, its exploit ability triggers; choose not to sacrifice a creature.
  7. Resolve the Repository Skaab trigger from step 4, sacrificing the Repository Skaab token.
  8. Repository Skaab's second ability triggers, returning Undying Malice to your hand from your graveyard.
  9. Repeat.

What the combo produces