The more you explore your options, the more avenues youll find to lower costs
You have ramp in the deck, and Im not sure 4 mana ramp is where you want to be, so I cut Skyshroud Claim Walk-In Closet // Forgotten Cellar Suggested Cut: Splendid Reclamation There are creatures that do the Crucible of Worlds effect, including some already in the deck, but I like a version that's harder to interact with
#9 Espeon V Alt Art In this stellar alternate art, Espeon can be seen psychically moving books around the library
potential is not as high, but the art of the card alone makes it worth it
If you cast a spell that allows you to draw two cards, and you have two cards with dredge in your graveyard, you can dredge them both
If Gemstone Caverns has a luck counter on it, instead add one mana of any color