Time Sieve + Tamiyo's Journal + Academy Manufactor + Helm of the Host

Time Sieve

Tamiyo's Journal

Academy Manufactor

Helm of the Host

How it works

1. At the beginning of your combat phase, Helm of the Host triggers, creating a token copy of Academy Manufactor with haste.
2. Activate Time Sieve by tapping it and sacrificing five artifacts, causing you to take an extra turn after this one.
3. Move to your next turn.
4. At the beginning of your upkeep, Tamiyo's Journal triggers, creating three Food, three Clue, and three Treasure artifact tokens.
5. Repeat from step 2.

This clever engine achieves infinite turns by turning a single upkeep trigger into an endless supply of sacrificial fodder for Time Sieve. The secret lies in Academy Manufactor, whose replacement effect turns the Clue token from Tamiyo's Journal's upkeep trigger into a massive harvest of three Clues, three Foods, and three Treasures every single round. Meanwhile, Helm of the Host ensures that you continue copying your Academy Manufactor to supercharge future token production if needed, though the initial trio provides more than enough fuel to tap Time Sieve and seize unending extra turns.