A couple of the vampire cards in the deck help to make black Vampire tokens, which can be sacrificed to Ayara, First of Locthwain to draw a card
In everybodys favorite casual format, where youre allowed to cast do-nothing 6-mana enchantments like Impostor Syndrome, there are plenty of ways to exploit this card, including legends-matter decks, blink decks, or decks that thrive on saboteur abilities
Another reason we are fine with sacrificing our creatures aggressively for value is that we have Lurrus of the Dream-Den as our companion, which lets us recast all of our Eyetwitchs, Shambling Ghasts, Cursebound Witches, and Putrid Goblins later in the game from our graveyard
At $5 for Prime Day, youre getting roughly 10 cents per card , which seriously undercuts what you would pay buying single cards or even regular booster packs at retail stores