With the return of dungeons in the Take the Initiative mechanics and a new cycle of metallic dragon cards, Wizards of the Coast has taken its crossover quite literally
While Tocasia's Welcome is far from being our mighty green artifact, it can still provide you with enough card draw through the course of a game to justify running it, especially if you use creatures with flash like Cathar Commando that can be played on your opponents turn to draw a card
Greninja V-UNION's cards are SWSH155-158, Mewtwo is SWSH159-162, and Zacian is SWSH163-166
Well of Lost Dreams Drawing cards and gaining life are unconnected effects at first glance, but they both share a tempo-negative nature: You spend resources to manipulate your hand or your life total, rather than your board
Magic's best battlecruiser and one of the biggest, baddest creatures ever to grace the game (even if they can be taken down by 15 squirrels), this is one of the few cards outright banned in Commander
Someone wanted to buy a card and they paid for it