Is it possible to change the Legend Set Enchantment from a finished set?
Yes. It’ll cost 1/4 the amount of pamokas you used. Do it the same way you did it the first time, at the Alchemist.
is this not possible for  savinose dysnai ? it is not possible to put it in the alchemist.
 is not possible as the set was applied via a set scroll. You’re stuck with that one unless you buy another pack. D: