Alchemy? Isn't that something to do with changing one substance into another? [Helios magic lessons and his own research may be paying off after all!]

The reason I ask is because regenerating limbs in humans isn't something even my culture has managed, and we travel among the stars.

[He raises a hand and turns on a video feed, pulling back the glove on his right hand to reveal a cybernetic implant]

I know from experience.