Rakdos, the Muscle, Patron of the Arts, Haunted Crossroads, and Ashnod's Altar

Prerequisites

• Rakdos, the Muscle on the battlefield
• Patron of the Arts on the battlefield
• Haunted Crossroads on the battlefield
• Ashnod's Altar on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Patron of the Arts, adding
2. When Patron of the Arts dies, it and Rakdos trigger
3. Resolve the Patron of the Arts trigger, creating a Treasure token
4. Activate the Treasure by tapping and sacrificing it, adding
5. Holding priority, activate Haunted Crossroads by paying , putting Patron of the Arts from your graveyard onto the top of your library
6. Resolve the Rakdos trigger, exiling three cards from the top of your library, including Patron of the Arts, with the ability to cast it until your next turn
7. Cast Patron of the Arts from exile by paying
8. When Patron of the Arts enters the battlefield, it triggers, creating a Treasure token
9. Activate the Treasure by tapping and sacrificing it, adding
10. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite storm count
• Exile your library with the ability to play the exiled cards until your next turn