Edgar, Master Machinist + Eldrazi Displacer + Cathodion + Helm of Awakening + Krark-Clan Ironworks

Edgar, Master Machinist

Eldrazi Displacer

Cathodion

Helm of Awakening

Krark-Clan Ironworks

How it works

1. Activate Krark-Clan Ironworks 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 clever loop relies on the cost-reduction of Helm of Awakening to turn Cathodion into a net-positive engine, letting you recast it for just two mana after sending it to the graveyard. When you sacrifice Cathodion to Krark-Clan Ironworks, its death trigger combined with the sacrifice mana yields enough colorless fuel to activate Eldrazi Displacer and continuously blink Edgar, Master Machinist. Edgar's static ability is the linchpin that allows you to repeatedly pull Cathodion right back out of the graveyard to restart the cycle, generating an endless stream of artifact sacrifices and triggers.