"There is an well-preserved corpse that no one knows it´s origin. It can be found in a hidden crypt, among candles and dragon bones, emanating a special glow. This is the story:
In Teleria there was once a mage, Urost, whose objective was to increase his powers through necromantic techniques: he wished to hide an army in a stone shard and thus be able to secretly hide his army from the dark hordes, to be summoned in the exact moment.
With some fear of punishment from the Sacred Order that ruled this domain, Urost, hidden deep in the Catacombs of Narbuk, tried hard to master the shard occult arts.
His works showed progress and he hoped in this way to fight the Demonspawn that was starting to invade Teleria, and defeat them.
With the help of his beloved Ursala, knowing the high risks, Urost delivered her the shard and spell to make this incantation. He himself was the test subject.
Ursala recited the spell trembling and apprehensive, but instead of hiding her beloved Urost in a Mysterious Shard, the shard began to envelop Urost absorving his soul in pain and agony.
Ursala, in tears, sought her greatest power and recited an ancient incantation to resurrect Urost, but to no avail as his soul was imprisoned in the living shard and his body could never be revived this way.
His soul was trapped forever in a shard cage.
UROST, once the mage, now THE SOULCAGE would forever be known as a specter of the forces he had sworn to fight. His beloved Ursala would be forever doomed to try to revive everyone else, while she would mourn her lover eternally.
Ursala the mourner would be so-called from now on and still today she weeps for her beloved Urost."
note:
Edited to fit the 300 words rule. now it have 299 :D