Time Sieve + Academy Manufactor + Tireless Provisioner + Arid Archway + Elspeth, Storm Slayer

Time Sieve

Academy Manufactor

Tireless Provisioner

Arid Archway

Elspeth, Storm Slayer

How it works

1. Play Arid Archway.
2. When Arid Archway enters, it and Tireless Provisioner trigger
3. Resolve the Arid Archway 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 Elspeth, Storm Slayer.
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.