Rakdos, the Muscle + Priest of Gix + Haunted Crossroads + Viscera Seer + Jet Medallion

Rakdos, the Muscle

Priest of Gix

Haunted Crossroads

Viscera Seer

Jet Medallion

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, causing you to scry 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 clever loop lets you endlessly sacrifice and recast your creature base by weaving cost reduction together with graveyard recycling. With Jet Medallion on the board making your black spells cheaper, Priest of Gix can be cast from exile for just two mana, immediately refunding three black mana upon entry to fuel the loop. Viscera Seer provides the free sacrifice outlet to send the Priest to the yard while setting up your draws, and Haunted Crossroads lets you pay a single black mana to loop the Priest right back to the top of your library. Finally, Rakdos, the Muscle capitalizes on every single sacrifice by chewing through your opponent's library and exiling your deck so you can play those cards at your leisure.