First, the draw probabilities: 40 cards 41 cards And, here we have a pretty picture again: And, once again, here is the data for your land-drop probabilities: 40 cards, on the play 40 cards, on the draw 41 cards, on the play 41 cards, on the draw And here are some more graphs: Once again, I've selected common land counts16, 17, 18and graphed them independently
While Pendulum monsters are not necessarily included in the Extra Deck (unless they are also an Xyz, Synchro, Link or Fusion monster), the Extra Deck is also where Pendulum monsters are sent instead of the graveyard
Exile spells like Vraskas Contempt, Baleful Mastery, Oblivion Strike or Silence the Believers should definitely be in the deck
Kamigawa: Neon Dynasty was pretty neat, as were the precons from Streets of New Capenna