When everyone returned home. That is, Miron's home, which was so big that you could lose a regiment in it, then he, the owner could finally let go.
The healing water was truly extraordinary. So extraordinary that in addition to curing his wounds, which were quite serious in this remote and rather sinister castle of Drekel, it also cured him of his forgetfulness.
No doubt only one of their own or a mage who had to offer his life in compensation, were able to create this nameless splendor.