Agatha of the Vile Cauldron + Chaos Spewer + Phyrexian Altar + Reaping Willow

Mana needed: {W/B}

BRGW identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Reaping Willow by paying {W/B} due to Agatha of the Vile Cauldron and removing two counters from it, returning Chaos Spewer from your graveyard to the battlefield.
  2. When Chaos Spewer enters, it triggers, putting two -1/-1 counters on Reaping Willow.
  3. Activate Phyrexian Altar by sacrificing Chaos Spewer, adding {W/B}.
  4. Repeat.

What the combo produces