Rakdos, the Muscle + Priest of Gix + Haunted Crossroads + Viscera Seer + The Immortal Sun

Rakdos, the Muscle

Priest of Gix

Haunted Crossroads

Viscera Seer

The Immortal Sun

How it works

1. Activate Viscera Seer by sacrificing Priest of Gix.
2. When Priest of Gix dies, Rakdos triggers.
3. Holding priority, activate Haunted Crossroads by paying , putting Priest of Gix from your graveyard onto the top of your library.
4. Resolve the Rakdos trigger, causing you to exile the top three cards of your library with the ability to play them until your next end step.
5. Resolve the Viscera Seer ability from step 1.
6. Cast Priest of Gix from exile by paying 2.
7. When Priest of Gix enters the battlefield, it triggers, adding .
8. Repeat.

This loop relies on a brilliant cost-reduction engine and recursion loop to continuously cycle through your deck. With The Immortal Sun discounting your creature spells by {1}, casting Priest of Gix from exile becomes a profitable venture, netting you three black mana every time it enters the battlefield. Viscera Seer provides the free sacrifice outlet to send the Priest straight to the graveyard, setting up Haunted Crossroads to easily place it right back on top of your library for just one black mana. Meanwhile, Rakdos, the Muscle watches every sacrifice and steadily exiles your entire library card by card, giving you access to all your spells while generating an infinite storm count and endless death triggers.