The fact that there are only three dungeons feels a bit limited, and the idea will probably get old quickly, but at least to start with it's fun
Creatures on the battlefield have Whenever this creature becomes the target of a spell or ability, sacrifice it. Chaos: Create a token that of a creature on the battlefield, except it has When this creature become the target of a spell or ability, sacrifice it. Through The Rift Phenomenon When you encounter Through The Rift, each player shuffles their library, and then flips the top card of their library
Moxfield added collection features after the deck builder was already established, and it shows
Also, I don't think the deck needs the additional card draw
Ultimately, its impossible to truly predict the future, but if the Spider-Man Collector Boosters follow recent trends, it will be the most expensive Collector Boosters yet
Here are a handful of inexpensive equipment with triggered abilities that will help the deck function: Explorer's Scope, Goldvein Pick, Greatsword of Tyr, Rogue's Gloves and Quietus Spike