Rakdos, the Muscle, Priest of Gix, Haunted Crossroads, Altar of Dementia, and Helm of Awakening

Prerequisites

• Rakdos, the Muscle on the battlefield
• Priest of Gix on the battlefield
• Haunted Crossroads on the battlefield
• Altar of Dementia on the battlefield
• Helm of Awakening on the battlefield
• available

Steps

1. Activate Altar of Dementia by sacrificing Priest of Gix
2. When Priest of Gix dies, Rakdos triggers
3. Holding priority, activate Haunted Crossroads by paying , putting Priest of Gix from your graveyard onto the top of your library
4. 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
5. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to Priest of Gix's power
6. Cast Priest of Gix from exile by paying
7. When Priest of Gix enters the battlefield, it triggers, adding
8. Repeat

Results

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