User blog comment:JohnnyN64/Lisanna/@comment-7418318-20140629182145

I don't think she need to leave on a long journey just to learn new Take-Over shapes. Such a shape can even be learned by a chance encounter in the wildernes could even be done on a few manga pages, maybe even just a single one.

I would be fine with some mythical beings, but not the pheonix. Even leaving the movie aside, I think that pheonixes are too far removed from actual animals to be applicable anymore and also a bit too powerful.

But I could imagine beings like Wyvern (the partial Wyvern Take-Over could look like this), the Griffon you mentioned already and a shark for water combat.

But considering how she can turn into a giant rabbit, I guess she's able to turn into giant version of real animals. So maybe a giant Scorpion would be a useful combat asset or instead of that colourful bird she can turn into now, she could aquite a bird of prey with a sharp beak and talons like an eagle or hawk for some proper arial battles.

And instead of a cat, she could learn to Take-Over into an actual Tiger. That ought to add more attack-strength than her cat Take-Over, whether partial or full.