Tatsunari, Toad Rider, Chthonian Nightmare, Priest of Gix, and Viscera Seer

Prerequisites

• Tatsunari, Toad Rider on the battlefield
• Chthonian Nightmare in hand
• Priest of Gix in hand
• Viscera Seer on the battlefield
• available

Steps

1. Cast Chthonian Nightmare by paying
2. Tatsunari triggers, creating a 3/3 Keimi legendary creature token
3. When Chthonian Nightmare enters, it triggers, causing you to get
4. Activate Chthonian Nightmare by paying , sacrificing Keimi and returning Chthonian Nightmare from the battlefield to your hand, returning Priest of Gix from your graveyard to the battlefield
5. When Priest of Gix enters, it triggers, adding
6. Activate Viscera Seer by sacrificing Priest of Gix
7. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite scry 1
• Infinite storm count
• Infinite black mana