It plays a lot of the same creatures seen in the Cryptolith Rite decks that play Collected Company, but this uses Eerie Interlude to accomplish some of the goals of Collected Company while allowing for a little more flexibility in the rest of the deck, and especially in sideboarding
I can even see a segment of players who might want to re-tool their Muldrotha decks into Winter decks: whether to down-grade from such a common and feared commander choice, or just to gain a more focused play style and color identity
Atraxa decks just became 200 card monstrosities
Googling "MTG Misprints" will quickly inundate you with many different resources, but here are maybe three of the better ones: r/MTGMisprints is a fantastic first step into evaluating the premiums that misprinted cards can yield
Six mana cards are generally not utility or answer cards which are the most useful to be able to tutor for, Treasure Mage will mostly go and find a win condition, which then begs the question as to why you are not just playing more win conditions or more effective draw spells