Bolas's Citadel + Mortuary + Phyrexian Altar + Tarpan

BG identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Phyrexian Altar by sacrificing Tarpan.
  2. When Tarpan dies, it and Mortuary triggers.
  3. Resolve the Mortuary trigger, putting Tarpan from your graveyard onto the top of your library.
  4. Resolve the Tarpan trigger, causing you to gain 1 life
  5. Cast Tarpan from the top of your library by paying 1 life due to Bolas's Citadel.
  6. Repeat.

What the combo produces