Time Sieve, Academy Manufactor, Conjurer's Closet, Gilded Goose, and Elesh Norn, Mother of Machines

Prerequisites

• Time Sieve on the battlefield
• Academy Manufactor on the battlefield
• Conjurer's Closet on the battlefield
• Gilded Goose on the battlefield
• Elesh Norn, Mother of Machines on the battlefield

Steps

1. At the beginning of your end step, Conjurer's Closet triggers, blinking Gilded Goose
2. When Gilded Goose enters the battlefield, it triggers twice, creating two Food, two Clue and two Treasure artifact tokens due to Academy Manufactor
3. Activate Time Sieve by tapping it and sacrificing five artifact tokens, causing you to take an extra turn after this one
4. Repeat

Results

• Infinite turns