The sub-dimensional ripples from Deepfathom affected the strange creature in Frostfire Pass and likely gave it such an aggressive and violent attitude!
You must hunt it. When you've slayed the beast, report to Alez, the White Flame Knight.
We cannot allow the creature to do any more harm.
Did you see the rare mutation? Did it smell of rotting corpses? Were its eyes bloody red?
The ripples from Deepfathom changed it fundamentally, and the bizarre environment of both fire and ice nurtured it into a monster.
Even ancient magic could not reverse the changes. The elders of the Magic Academy have no better solution. It must be defeated.
Perhaps, if we can study it, we can learn exactly how the ripples affected it.