Like most Magic: The Gathering cards, the value of Spider-Man Noir depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Marvel's Spider-Man)
To put in more specific terms, Im 1/80 to get a Borderless Wrenn and Six of any type, but Im 1/160 to get either a Textured foil or a Borderless
Preordain and Faithless Looting are a way to sculpt your hand
Secondly, in decks with a way to sacrifice a lot of cards for value before bringing them back for another go around
I am 99% sure that Phyrexia is going to invade Kaladesh, with it either happening in the next set, or very clearly setting up the invasion for our return to Kaladesh the next time around