Ashnod's Altar + Extractor Demon + Quintorius, Field Historian + Transplant Theorist

WUBR identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Ashnod's Altar by sacrificing another creature, adding {C}{C}.
  2. When the creature dies, Extractor Demon triggers, causing you to mill two cards if your graveyard is empty, or causing an opponent to mill two cards otherwise.
  3. If your library is empty, activate Transplant Theorist by paying {2}, putting a card from your graveyard onto the bottom of your library.
  4. Quintorius triggers, creating a 3/2 Spirit creature token.
  5. Repeat.

What the combo produces