While we're mostly a Cat deck, we also have a Dog in Selfless Savior, which not only gives us another one-drop but also helps to protect our most important creatures, like Rin and Seri, Inseparable and our Cat lords, from our opponent's removal by sacrificing itself to make them indestructible
Especially because no matter what you hang on to the massive dragon
We also took notes on how SQUARE ENIX themselves utilized these characters in their other releases
Cards like Man-O'-War, Aether Adept, and Venser, Shaper Savant all do a great job at getting stuff off the board, but only in a temporary capacity
It works, flavour-wise, as the Polar Kraken keeps eating your lands, but generally big creatures are afraid of creature-specific removal even without an increasing tumour of a downside
If trading individual cards, trade-in for cards that can go in multiple decks : This is similar to the reason for rare and mythic dual lands