Rakdos, the Muscle + Shambling Ghast + Haunted Crossroads + Birgi, God of Storytelling // Harnfel, Horn of Bounty + Altar of Dementia

Rakdos, the Muscle

Shambling Ghast

Haunted Crossroads

Birgi, God of Storytelling // Harnfel, Horn of Bounty

Altar of Dementia

How it works

1. Activate Altar of Dementia by sacrificing Shambling Ghast.
2. When Shambling Ghast dies, it and Rakdos trigger.
3. Resolve the Shambling Ghast trigger, creating a Treasure token.
4. Activate the Treasure by tapping and sacrificing it, adding .
5. Holding priority, activate Haunted Crossroads by paying , putting Shambling Ghast from your graveyard onto the top of your library.
6. Resolve the Rakdos trigger, exiling Shambling Ghast from the top of your library with the ability to cast it until your next turn.
7. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Shambing Ghast's power.
8. Cast Shambling Ghast from exile by paying 1.
9. Birgi triggers, adding .
10. Repeat.

This intricate loop relies on Altar of Dementia to continually sacrifice Shambling Ghast, milling your opponents while triggering its death ability to create a Treasure token. That Treasure provides the black mana needed for Haunted Crossroads to loop Shambling Ghast right back to the top of your library, where Rakdos, the Muscle exiles it upon sacrifice so it can be recast directly from exile. To grease the wheels, Birgi, God of Storytelling provides a vital influx of red mana every time you recast the Ghast, ensuring you have the resources to keep this engine running indefinitely.