Time Sieve + Tamiyo's Journal + Academy Manufactor + Double Major

Time Sieve

Tamiyo's Journal

Academy Manufactor

Double Major

How it works

1. Cast Academy Manufactor by paying 3.
2. Holding priority, cast Double Major by paying , copying Academy Manufactor.
3. Resolve both Academy Manufactor spells.
4. Activate Time Sieve by tapping it and sacrificing five artifacts, causing you to take an extra turn after this one.
5. Move to your next turn.
6. At the beginning of your upkeep, Tamiyo's Journal triggers, creating three Food, three Clue, and three Treasure tokens.
7. Repeat from step 4.

This brilliant loop is built on the incredible replacement effect of Academy Manufactor, which turns every single token-creation event into an absolute windfall of resources. Because you control two copies of Academy Manufactor thanks to the clever timing of Double Major, a single trigger from Tamiyo's Journal doesn't just investigate—it floods your board with nine total tokens, easily satisfying the five-artifact sacrifice cost required by Time Sieve. Once the engine is online, Tamiyo's Journal supplies more than enough fodder during each upkeep to sustain Time Sieve indefinitely, locking down the game under an endless succession of your turns.