As for what to do when a finger is severed?
Of course, you just chill.
Dorothy shook her hand, and saw magic power bursting from the severed finger wound, forming the framework of a finger. Immediately after, wriggling flesh and bone climbed along the magic power framework, and in the blink of an eye, a brand new, equally flawless finger had regenerated.
Transformable Dragon Body, quite marvelous, right?
Well, basically it's just the intrinsic powerful self-healing ability of a Great Dragon combined with a bit of transformation magic, nothing much to worry about. After all, it doesn't compare to my sister Alice's Immortal Body, where you don't die unless the Blood River itself is destroyed. The most I can do is Blood Rebirth, recovering health as I breathe. Basic operation, don't make a fuss.
However, Dorothy's severed finger escaped, but that Single-horned Dragon Snake that the whole dragon charged into...
Oh hoo, cool...
