First Snow Elven Migration

38 years after the alchemy stone was discovered the first children in Meridia were born with strange white hair. It was the first evidence that the fallout caused by the excavation of the alchemy stone was now undeniable. Other than the defect, not much else was known until years when a fire burnt down a home and the cause went unexplained until a weeks later it was first documented that a child was able to cast fire from their hands at will. 
A few years passed and the skill was found to be common amongst all those born with white hair until complaints over the heat coming of the desert was becoming to unbearable and finally it happened. Suddenly Elves mysteriously died from spontaneous combustion where their body burst into flames uncontrollably. The first death was written off as a freak accident but after seveal more within months if each other, panic begab ti ensue. 
It was concluded that these new type of elves were unable to regulate their body temperature on their own as they got older and it was decided that they should leave and seek refuge in the northern part of the known world were it was known to be colder and thus it began. The great migration. 
in what seemed like a decision made overnight the white haired Elves departed with their eyes fixated north leaving those whose behind that tmdid bit adapt to this new world.