Dark Ritual + Grenzo, Dungeon Warden + Phyrexian Altar + and 2 others

Mana needed: {B}

RWB identity

Commander legal

The 5 combo pieces

What must be in place

Grenzo has power 2 or greater.

How to execute it

  1. Cast Dark Ritual by paying {B}, adding {B}{B}{B}.
  2. Activate Phyrexian Altar by sacrificing Returned Pastcaller, adding one mana of any color.
  3. When Returned Pastcaller dies, The Cauldron of Eternity triggers, putting Returned Pastcaller from your graveyard onto the bottom of your library.
  4. Activate Grenzo by paying {2}, putting Returned Pastcaller from the bottom of your library into your graveyard, and then putting it onto the battlefield.
  5. When Returned Pastcaller enters the battlefield, it triggers, returning Dark Ritual from your graveyard to your hand.
  6. Repeat.
  7. Once you have infinite mana, you may activate Grenzo's ability any number of times.

What the combo produces