Emry, Lurker of the Loch + Displacer Kitten + Deceiver Exarch + Dark Sphere

Emry, Lurker of the Loch

Displacer Kitten

Deceiver Exarch

Dark Sphere

How it works

1. Activate Emry by tapping it, targeting Dark Sphere.
2. Cast Dark Sphere from your graveyard by paying 0.
3. Displacer Kitten triggers, blinking Deceiver Exarch.
4. When Deceiver Exarch enters, it triggers, untapping Emry.
5. Activate Dark Sphere by tapping and sacrificing it.
6. Repeat.

This intricate loop starts by using Emry, Lurker of the Loch to pull Dark Sphere right back out of your graveyard for zero mana, leveraging her tap ability to recast it repeatedly. Every time you cast that noncreature artifact, Displacer Kitten's avoidance trigger blinks Deceiver Exarch, bringing it back to the battlefield. That new entry triggers Deceiver Exarch to untap Emry, refreshing her ability so you can tap her again and repeat the cycle endlessly. Meanwhile, you can sacrifice Dark Sphere along the way whenever you need to stockpile infinite artifact sacrifices, triggers, and storm count.