(Additionally, some of these effects are often built into tribal rewards on creatures for the tribe, such as Heron's Grace Champion being a combat trick in addition to also being a creature.) Additionally, there are cards that want your deck to have a higher overall count of a creature type to make sure they work more often
Just remember to have fun and dont spend more than you can afford
Life of Toshiro Umezawa / Memory of Toshiro I know Life of Toshiro Umezawa is a saga, but the enchantment creature is a samurai, so its valid by my book
Obviously I still advocate for playing cards like Aetherize, especially if you are in mono-blue, but unless youre playing hard control a spell like Raise the Palisade is going to come in very handy
Super-Skrull The rates Super-Skrull charges for its results are on the high side, but they are worth full cards on their own and you always want access to them