Rakdos, the Muscle + Shambling Ghast + Haunted Crossroads + Prosper, Tome-Bound + Goblin Bombardment

Rakdos, the Muscle

Shambling Ghast

Haunted Crossroads

Prosper, Tome-Bound

Goblin Bombardment

How it works

1. Activate Goblin Bombardment 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 Goblin Bombardment ability, dealing 1 damage to any target.
8. Cast Shambling Ghast from exile by paying 1.
9. Prosper triggers, creating a Treasure token.
10. Activate the Treasure by tapping and sacrificing it, adding 1.
11. Repeat.

This clever loop feeds on itself by using Goblin Bombardment to continually hurl Shambling Ghast into the afterlife, triggering both the Ghast's own death effect and Rakdos, the Muscle's exile ability. Haunted Crossroads provides the necromantic glue, using mana from the Treasures generated by Shambling Ghast to recycle the creature right back to the top of your library so Rakdos can exile it for casting. Meanwhile, Prosper, Tome-Bound turns every single re-cast from exile into an extra Treasure token, sustaining the mana flow needed to keep the loop firing indefinitely.