Chthonian Nightmare, Priest of Gix, and Skullport Merchant

Prerequisites

• Chthonian Nightmare on the battlefield
• Priest of Gix in the graveyard
• Skullport Merchant on the battlefield

Steps

1. Activate Chthonian Nightmare by paying , sacrificing Skullport Merchant and returning Chthonian Nightmare from the battlefield to your hand, returning Priest of Gix from your graveyard to the battlefield
2. When Priest of Gix enters the battlefield, it triggers, adding
3. Cast Chthonian Nightmare by paying
4. When Chthonian Nightmare enters the battlefield, it triggers, causing you to get
5. Activate Chthonian Nightmare by paying , sacrificing Priest of Gix and returning Chthonian Nightmare from the battlefield to your hand, returning Skullport Merchant from your graveyard to the battlefield
6. When Skullport Merchant enters, it triggers, creating a Treasure token
7. Activate the Treasure by tapping and sacrificing it, adding
8. Cast Chthonian Nightmare by paying
9. When Chthonian Nightmare enters the battlefield, it triggers, causing you to get
10. Repeat

Results

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