If you're opening Collector Boosters, your chances increase significantly, as they contain a minimum of three Mystical Archive cards per pack
After some months of testing though, it quickly become a frequently played mainstay in the format, and I already have in a lot of maindecks/sideboard of my decks
Compulsive Research You can play Compulsive Research yourself like a Thirst for X kind of card, but it can also force someone to draw three, which is useful
Krosan Restorer Decks that consistently enable threshold leverage Krosan Restorer to great effect
Im not super-optimistic of its chances, however, as it doesnt actually hard-counter the interaction while also having tons of huge blind spots (such as permission and sweepers)
Card Name Type Scheme Rarity Common rules Text When you set this scheme in motion, for each card type among permanents your opponents control, you may put a permanent card of that type from your hand onto the battlefield