Edgar, Master Machinist + Eldrazi Displacer + Cathodion + Ashnod's Altar + Urza, Lord Protector

Edgar, Master Machinist

Eldrazi Displacer

Cathodion

Ashnod's Altar

Urza, Lord Protector

How it works

1. Activate Ashnod's Altar by sacrificing Cathodion, adding CC.
2. When Cathodion dies, it triggers, adding CCC.
3. Activate Eldrazi Displacer by paying 2C, blinking Edgar.
4. Cast Cathodion from your graveyard by paying 2.
5. Repeat.

This intricate loop harnesses the sacrifice engine of Ashnod's Altar to feed Cathodion directly into its graveyard recursion, as Edgar, Master Machinist allows you to repeatedly cast the automaton from your yard. Eldrazi Displacer acts as the mechanical heart of the sequence, using the colorless mana generated from Cathodion's death and sacrifice to continually blink Edgar and reset the battlefield state. Meanwhile, Urza, Lord Protector quietly lightens the load by reducing spell costs, ensuring you always come out ahead on mana to keep the perpetual cycle spinning.