Personal Tutor is probably the best card here because of its sheer value: for a single blue mana, you can search your library for any sorcery card and put it on the top of your deck
Blade becomes more of a liability when its just you versus one other opponent, but an adjustable goad effect is great up until that point
Tokens, big beasts, and dragons, Naya has it all, so naturally the cards represent an equally large swath of styles and strategies usually tied to creatures and creature combat, which makes for a lot of very usable spells for Naya's Commanders
Getting behind in ink is a surefire way to disadvantage yourself in later rounds, and its easy to forget to ink with everything else going on in the game
If only one creature per combat came off the top of the deck, it would make her more palatable
MTG's Avatar Aang was the first card to be revealed from the set, and it single-handedly raised the price of older cards for potential Commander combos