Which power should i buy?

i think you can get one small mythical creature (if you wanna keep it under 5 feet) item or one large mythical creature (if you want them to be lorge) item and that's it? if that's the original body they have and they aren't going to be transforming from or into another body, then you can keep it at small mythical creature.

i'm... not 100% sure though because it's been a while since i last saw a shop system so better to wait for staff, still!