Time Sieve + Academy Manufactor + Rakdos Carnarium + Tireless Provisioner + Exalted Sunborn

Time Sieve

Academy Manufactor

Rakdos Carnarium

Tireless Provisioner

Exalted Sunborn

How it works

1. Play Rakdos Carnarium.
2. When Rakdos Carnarium enters, it and Tireless Provisioner trigger
3. Resolve the Rakdos Carnarium trigger, returning it from the battlefield to your hand.
4. Resolve the Tireless Provisioner trigger, creating two Treasure, two Clue and two Food artifact tokens due to Academy Manufactor and Exalted Sunborn.
5. Activate Time Sieve by tapping it and sacrificing five of the artifact tokens, causing you to take an extra turn after this one.
6. Repeat each turn.