Rakdos, the Muscle + Priest of Gix + Haunted Crossroads + Jet Medallion + Phantom Train

Rakdos, the Muscle

Priest of Gix

Haunted Crossroads

Jet Medallion

Phantom Train

How it works

1. Activate Phantom Train 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 Phantom Train 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 clever loop uses Phantom Train as an outlet to repeatedly sacrifice Priest of Gix, whose entry trigger generates black mana to feed the engine. Jet Medallion reduces the casting cost of your spells, ensuring you have the mana to replay Priest of Gix from exile after Rakdos, the Muscle exiles it from your library. Meanwhile, Haunted Crossroads rescues the Priest from your graveyard right back to the top of your library so Rakdos can catch it, while Rakdos, the Muscle itself fuels the entire chain by letting you play out your library as you sacrifice creatures.