Since the Sphere of Light increased the number of SoulStar Fragments required to upgrade a Soultrait, Michael didn't have enough Fragments to upgrade one of his Soultraits to a 6-Star Soultrait. It was unfortunate, but maybe that was for the better. After all, his Soultraits were already quite powerful, and it might be better to save the SoulStar Fragments to upgrade the Forest Elves' Soultraits once they decided to follow him until the end.
The only thing Michael desired to do with his SoulStar Fragments was to upgrade Glacicle to 5-Star. It was already at the border separating 4-Star from 5-Star, so Michael wouldn't have to spend too many SoulStar Fragments to complete the upgrade. Therefore, he did just that. He spent 1251 SoulStar Fragments to complete Glacicle's upgrade to a proper 5-Star Soultrait.
