You pay all costs and follow all timing rules for cards played with the permission granted by Hades, Sorcerer of Eld's second ability
Reanimator has been done in these colors before, but this deck is extremely committed to the strategy , with tons of card filtering setting up the graveyard and paying you off for keeping it full
Still, its staggering value comes from a triple threat of things to consider: this is a beloved Marvel artifact, its been given ultra-premium foil treatment, and its extremely rare
In a way, same is true for Card not found, which is a fixed version of Card not found, but fixed means a lot worse, in this case
I am willing to put in some work