Eternal Witness + Kaya's Ghostform + Phyrexian Altar

BG identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate Phyrexian Altar by sacrificing Eternal Witness, adding {B}.
  2. When Eternal Witness dies, Kaya's Ghostform triggers, returning Eternal Witness from your graveyard to the battlefield.
  3. When Eternal Witness enters the battlefield, it triggers, returning Kaya's Ghostform from your graveyard to your hand.
  4. Cast Kaya's Ghostform by paying {B}, attaching it to Eternal Witness.
  5. Repeat.

What the combo produces