Comboing off in this deck involves generating infinite mana and drawing your whole deck, then using Karn, the Great Creator to grab a win condition
BPhillipYork: A spawn doubler, for go-wide Eldrazi spawn/scion decks an important piece, but also just generally useful for generating mana to cast even more big fatties
Boseiju, Who Shelters All For Boseiju, Who Shelters All to be worth the 2-life tax it imposes, you need to be casting big instants or sorceries that win the game if they resolve
Elsewhere, it still has some uses
While commanders like Drizzt Do'Urden, Gavi, Nest Warden, Jinnie Fay, Jetmir's Second, Jolrael, Mwonvuli Recluse, and Lord Windgrace give you tokens that are Cats (or Cat Warriors), theyre usually asking you to build around other strategies, not cats as a theme
Our Dragon Spirits are 5/4, but without Trample, they are easily chump-blocked