Automated Assembly Line + Gonti's Aether Heart + Demon of Dark Schemes + Thermopod

Automated Assembly Line

Gonti's Aether Heart

Demon of Dark Schemes

Thermopod

How it works

1. Activate Automated Assembly Line by paying EEE, creating a 3/3 Robot artifact creature token.
2. When the Robot enters the battlefield, Gonti's Aether Heart triggers, causing you to get EE.
3. Activate Thermopod's second ability by sacrificing the Robot, adding .
4. When the Robot dies, Demon of Dark Schemes' second ability triggers, causing you to get E.
5. Repeat.

This engine relies on a self-sustaining loop of energy generation and creature recycling to spin completely out of control. Automated Assembly Line provides the initial spark by converting your energy into a 3/3 Robot token, which immediately triggers Gonti's Aether Heart to refill your energy reserves upon entering the battlefield. You then feed that newly minted Robot directly to Thermopod, generating red mana while its death triggers Demon of Dark Schemes to siphon yet another energy counter. Because Demon of Dark Schemes conveniently nets you enough total energy between the entry and exit steps to match the initial investment, you can loop this process indefinitely for an infinite stream of red mana, deaths, and sacrifices.