Bloodsoaked Champion + Phyrexian Altar + Sifter of Skulls

B identity

Commander legal

The 3 combo pieces

What must be in place

You attacked with a creature this turn.

How to execute it

  1. Activate Phyrexian Altar by sacrificing Bloodsoaked Champion, adding {B}.
  2. Sifter of Skulls triggers, creating a 1/1 Eldrazi Scion token.
  3. Activate the Eldrazi Scion by sacrificing it, adding {C}.
  4. Activate Bloodsoaked Champion by paying {1}{B}, returning it to the battlefield.
  5. Repeat.

What the combo produces