Cathodion + Enduring Renewal + Phyrexian Altar

W identity

Commander legal

The 3 combo pieces

What must be in place

You have seven or more cards in your graveyard.

How to execute it

  1. Activate Phyrexian Altar by sacrificing Cathodion, adding one mana of any color.
  2. Cathodion dies, triggering itself and Enduring Renewal.
  3. Resolve the Cathodion trigger, adding {C}{C}{C}.
  4. Resolve the Enduring Renewal trigger, causing you to return Cathodion from your graveyard to your hand.
  5. Cast Cathodion by paying {3}.
  6. Repeat.

What the combo produces