Rakdos, the Muscle + Priest of Gix + Haunted Crossroads + Altar of Dementia + Pawn of Ulamog

Rakdos, the Muscle

Priest of Gix

Haunted Crossroads

Altar of Dementia

Pawn of Ulamog

How it works

1. Activate Altar of Dementia by sacrificing Priest of Gix.
2. When Priest of Gix dies, Pawn of Ulamog and Rakdos trigger.
3. Resolve the Pawn of Ulamog trigger, creating a 0/1 Eldrazi Spawn creature token.
4. Holding priority, activate Haunted Crossroads by paying , putting Priest of Gix from your graveyard onto the top of your library.
5. 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.
6. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to Priest of Gix's power.
7. Activate the Eldrazi Spawn by sacrificing it, adding C.
8. Cast Priest of Gix from exile by paying 3.
9. When Priest of Gix enters the battlefield, it triggers, adding .
10. Repeat.