Fumulus, the Infestation + Oathsworn Vampire + Phyrexian Altar

B identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate Phyrexian Altar by sacrificing Oathsworn Vampire, adding {B}.
  2. When Oathsworn Vampire dies, Fumulus triggers, creating a creature token.
  3. Activate Phyrexian Altar by sacrificing the creature token, adding {1}.
  4. Cast Oathsworn Vampire from your graveyard by paying {1}{B}.
  5. Repeat.

What the combo produces