Chthonian Nightmare, Greedy Freebooter, Shambling Ghast, and Birgi, God of Storytelling // Harnfel, Horn of Bounty

Prerequisites

• Chthonian Nightmare in hand
• Greedy Freebooter on the battlefield
• Shambling Ghast in the graveyard
• Birgi, God of Storytelling // Harnfel, Horn of Bounty on the battlefield
• available

Steps

1. Cast Chthonian Nightmare by paying
2. Birgi triggers, adding
3. When Chthonian Nightmare enters the battlefield, it triggers, causing you to get
4. Activate Chthonian Nightmare by paying , sacrificing Greedy Freebooter and returning Chthonian Nightmare from the battlefield to your hand
5. When Greedy Freebooter dies, it triggers, causing you to scry 1 and create a Treasure token
6. Resolve the Chthonian Nightmare ability, returning Shambling Ghast from your graveyard to the battlefield
7. Activate the Treasure by tapping and sacrificing it, adding
8. Cast Chthonian Nightmare by paying
9. Birgi triggers, adding
10. When Chthonian Nightmare enters the battlefield, it triggers, causing you to get
11. Activate Chthonian Nightmare by paying , sacrificing Shambling Ghast and returning Chthonian Nightmare from the battlefield to your hand
12. When Shambling Ghast dies, it triggers, creating a Treasure token
13. Resolve the Chthonian Nightmare ability, returning Greedy Freebooter from your graveyard to the battlefield
14. Activate the Treasure by tapping and sacrificing it, adding
15. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite scry 1
• Infinite storm count
• Infinite energy counters