Biotransference + Extraction Specialist + Leonin Relic-Warder + Phyrexian Altar

Mana needed: {W}{W}

WB identity

Commander legal

The 4 combo pieces

What must be in place

You have at least 2 life.

How to execute it

  1. Cast Leonin Relic-Warder by paying {W}{W}.
  2. Biotransference triggers, causing you to lose 1 life and create a 2/2 Necron Warrior token.
  3. Leonin Relic-Warder's ETB ability triggers, exiling Extraction Specialist.
  4. Activate Phyrexian Altar by sacrificing Leonin Relic-Warder, adding one mana of any color.
  5. Leonin Relic-Warder's LTB ability triggers, returning Extraction Specialist from exile to the battlefield.
  6. Extraction Specialist enters the battlefield, returning Leonin Relic-Warder from your graveyard to the battlefield.
  7. Repeat from step 3.

What the combo produces