It seems okay in general, but I do question its necessity.
If a little girl loses a leg in 2011, it's tragic. In 2073, it's more of a "terrible accident" at worst, and at best, a minor inconvenience. She can have a new leg cloned from her tissue, force-grown to the right size, and reattached. Or she can buy an off-the-rack Type 0 leg. Or, if you're destitute, you can steal a leg from another little girl and attach it.
I can understand it from the perspective of "I know a mage and he fixed my little girl because he knows healing magic." From a wider perspective, there are more commerically viable ways of attaching legs to little girls.
If a little girl loses a leg in 2011, it's tragic. In 2073, it's more of a "terrible accident" at worst, and at best, a minor inconvenience. She can have a new leg cloned from her tissue, force-grown to the right size, and reattached. Or she can buy an off-the-rack Type 0 leg. Or, if you're destitute, you can steal a leg from another little girl and attach it.
I can understand it from the perspective of "I know a mage and he fixed my little girl because he knows healing magic." From a wider perspective, there are more commerically viable ways of attaching legs to little girls.
I agree with this, and add that you can acces the regeneration power by other ways :
A Great Form Plant spirit in a possession tradition.
Using an Immortal Flower mixture.
Such a spell could be very powerfull, as a GM i would not agree a PC having it.
It's a Pandora box, with a regeneration spell and a sustaining focus, you can :
open a "all you can eat" for ghouls.
generate bioware for free.
use a type O clone as an organ farm fabric line.
you can f*** o** all implanted cyberware from a target.
that just some exemple of universe-breaking thinks you can do with such a soell. i am sure you can find another one.