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

Automated Assembly Line

Gonti's Aether Heart

Demon of Dark Schemes

Blasting Station

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 and Blasting Station trigger.
3. Resolve the Gonti's Aether Heart trigger, causing you to get EE.
4. Resolve the Blasting Station trigger, untapping it.
5. Activate Blasting Station by tapping it and sacrificing the Robot.
6. When the Robot dies, Demon of Dark Schemes' second ability triggers, causing you to get E.
7. Resolve the Blasting Station ability, dealing 1 damage to any target.
8. Repeat.

This engine relies on a self-sustaining loop of energy and artifacts, kicked off by Automated Assembly Line's activated ability to churn out 3/3 Robot tokens. Every time one of those tokens enters the battlefield, Gonti's Aether Heart chips in two energy counters and Blasting Station neatly untaps itself. You then sacrifice the fresh Robot to Blasting Station to ping an opponent, which causes Demon of Dark Schemes to spot the death and hand you another energy counter. With Demon of Dark Schemes and Gonti's Aether Heart pooling their triggers together, you generate precisely the three energy needed to fuel the Assembly Line all over again, turning an endless march of scrap metal into infinite damage.