Ashaya, Soul of the Wild, Blossoming Tortoise, Spawning Pit, Mishra, Eminent One, and Doc Samson, Super Psychiatrist

Prerequisites

• Ashaya, Soul of the Wild on the battlefield
• Blossoming Tortoise on the battlefield
• Spawning Pit on the battlefield
• Mishra, Eminent One on the battlefield
• Doc Samson, Super Psychiatrist on the battlefield

Steps

1. At the beginning of your combat phase, Mishra triggers, creating a copy of Spawning Pit that is a 4/4 artifact creature named Mishra's Warform
2. Activate Mishra's Warform using Spawning Pit's first ability by sacrificing another creature, putting two charge counters on it
3. Activate Spawning Pit's second ability by removing two charge counters from it due to Blossoming Tortoise, creating a 2/2 Spawn artifact creature token
4. Repeat from step 2

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers