You can transform into a goose or a cat. I haven't met a game that let me do this since Mabi, and that game was horribly p2w (and janky).
Heck, you can even transform into one of those dragonstar respawn points (you have the green text above you and everything)... We're talking stealth lvl 100 checks no player would ever expect. I think you can even do this on the PVP faction map. It's a 20h cooldown on the skill/world item, but by my god it would be funny to do in ow pvp.
...and a raccoon and a rabbit!