Time Sieve + Academy Manufactor + Selesnya Sanctuary + Tireless Tracker + Doubling Season

Time Sieve

Academy Manufactor

Selesnya Sanctuary

Tireless Tracker

Doubling Season

How it works

1. Play Selesnya Sanctuary.
2. When Selesnya Sanctuary enters, it and Tireless Tracker trigger
3. Resolve the Selesnya Sanctuary 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 Doubling Season.
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.