Fraust is the most secret and powerful optional boss of the Portoa area.
Pyrogryff being the boss of condensed fire spirits, she is its water spirits counterpart. You can also expect Wind and Thunder spirits bosses to appear later on ^^
You can stumble upon Fraust pretty easily, but she can only be fought at a very specific time in the storyline, making the battle easy to miss.

This Frost Bolt attack has a wide effect area but Misae can still move out of it while taking damage, unlike what happens when you're stuck inside Pyrogryff. I will fix that and other similar "death traps" from the v0.1 segment for the next release.