Being an enchantment, Typhoon is very difficult for a lot of decks to interact with
While this lesser Shelob makes a great commander for a deck based around removal and the graveyard, you're probably going to have to lean on some artifact creatures if you want to fill your deck with other spiders
If we draw Treasure Hunt, we can simply do it again the next turn, and if we draw Jace, Wielder of Mysteries, we can use Mystic Sanctuary to put Treasure Hunt back on top of our deck
4 The First Tyrannic War Triggering the ravenous effect on all of your X casting cost cards will be a lot easier if you manage to cast The First Tyrannic War
I have two main justifications for this high count, a theoretic and a practical one
Commandeer There are many non-creature spells printed through Magic history that are either very powerful, like Nexus of Fate, or may represent immediate wins like Emergent Ultimatum or, god-forbid, Omniscience