Regeneration adaption
Your regeneration adapts to different forms and damages done to your form.
Say you're a normal human. And then someone turns you into a lion. Regenerating back into a human would take a while. So, it's speeding up your normal regeneration as a lion and will eventually switch the regeneration back to human eventually once it's fast enough it won't cause any movement issues.
Or you're a normal human. And then you get turned into a liquid. Your regeneration can't exactly fix that as much. You don't know how to move, and you're just a liquid on the floor now. But your regeneration will adapt to that and eventually turn you back to normal, or at least restore your ability to move.
This is different from adaptive regeneration. Which makes you immune/resistant to things as soon as your regenerate from the harm.
This is adapting your regeneration so that you are restored in a safe way/ way that would restore you in a good way.
An Application of this could be shapeshifting/Bioshifting into previous forms via regenerating into them.
Self sustenance would be an associated power due to regeneration needing sustenance it probably wouldn't have. As well as accelerating regeneration and regenerative healing factor.