Two gods warred in the lands that now make up Sarkhan, tearing the earth asunder (Giant Chasm), until they each struck the other a fierce, resounding blow, spreading the blood of gods across the lands and into the seas (positive/negative emotion fueled demons).
This forced one of the gods to retreat (into the seas), while the other curled protectively around one of the first groups of mortals (elves?), forming a large encircling mountain range and forming a node in the centre of the valley that has prescient powers.
Make there be an oracle there, one that requires “an item treasured by the one that the question is about/asks the question” offer only glipses and probabilties.
Long and valued tradition of psionics.
Psionics are nature’s reaction to the presence of abberants, almost like an immune system.
According to legend, there is a dead aberrant god buried in the mountains in Ackeron. Hence the prevalence of psionics.