So many top blue cards are totally unplayable if you don't see the stuff to go with it
Oh, and it's Standard-legal
Every card in Commander Masters is useful for draft, pre-constructed Commander decks, or both, from ordinary Uncommons like Arcane Signet Rogue's Passage to splashy Rares and Mythic Rares such as Mystic Confluence, Craterhoof Behemoth, and Mangara, the Diplomat
In addition, while Haakon cant be played from the command zone, he can be played from your graveyard, which works even better since it avoids the commander tax issue
Part of the fun in deckbuilding is experimenting and trying things that have never been done before
Spiders tend to be mono-green cards and usually have reach, although the scope of spider creatures has expanded significantly with the release of Marvel's Spider-Man