Thanks to countless researches and my patience, I've found a way to safely modify the power of circlets.
It's a very complex procedure that requires maximum concentration. That's why not any circlet can be modified. For example, circlets that can't be exchanged are not good for it - too complicated, if you know what I mean.
Radiant Circlet would be the most suitable item.
If you're going to modify the power of Radiant Circlet, it will cost you 1,500,000,000 adena.
So, what do you think?