Phyrexian Altar + Relentless Dead + Rooftop Storm

UB identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate Phyrexian Altar by sacrificing Relentless Dead, adding {B}.
  2. Relentless Dead's first and second abilities trigger.
  3. Resolve Relentless Dead's first ability, causing you to pay {B} to return Relentless Dead from your graveyard to your hand.
  4. Resolve Relentless Dead's second abilitiy, choosing not to pay.
  5. Cast Relentless Dead by paying {0}.
  6. Repeat.

What the combo produces