Rakdos, the Muscle, Shambling Ghast, Haunted Crossroads, and Ashnod's Altar

Prerequisites

• Rakdos, the Muscle on the battlefield
• Shambling Ghast on the battlefield
• Haunted Crossroads on the battlefield
• Ashnod's Altar on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Shambling Ghast, adding
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. Cast Shambling Ghast from exile by paying
8. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite storm count