Time Sieve + Academy Manufactor + Tireless Tracker + Azorius Chancery + Elspeth, Storm Slayer

Time Sieve

Academy Manufactor

Tireless Tracker

Azorius Chancery

Elspeth, Storm Slayer

How it works

1. Play Azorius Chancery.
2. When Azorius Chancery enters, it and Tireless Tracker trigger
3. Resolve the Azorius Chancery trigger, returning it from the battlefield to your hand.
4. Resolve the Tireless Tracker 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.