Its a symmetrical effect, however, but you can get around that by running snow-covered basics: they have a different name to their non-Snow counterparts, so only the snow-covered versions will benefit
I, II Mill two cards, then you may return a creature card from your graveyard to your hand
PSE Prismatic Secret Rare Ruddy Rose Dragon X FIRE Level 10 [ DragonSynchroEffect ] ATK 3200 DEF 2400 1 Tuner + 1+ non-Tuner monsters If this card is Synchro Summoned: You can banish all cards from the GYs, then, if this card was Synchro Summoned using "Black Rose Dragon" or a Plant Synchro Monster as material, you can destroy all other cards on the field
In November 2020, a PSA Gem Mint 10 Dark Magician from DDS sold for well over $10,000
In either case, this will find a place in almost every collection.
The threat of an opponent taking control of your boss monster and attacking you for the win is something all decks will need to consider going forwards, even if the card ends up being used merely as a Side Deck tech choice