Yhdra

What foul evil spawned the yhdra is still a mystery to many, but there was no doubt as to its power and its malice. In some places it took the form of a disease, a plague that first ravaged crops, then wombs, then the strong and the healthy. Others were struck by tragic spurts of sorrow and melancholy, throwing themselves from heights, drowning themselves or falling on their own swords. Elsewhere, Men suddenly grew mad, blind, feral and turned on their own kin. Nothing seemed to be able to stop the yhdra, neither faith, blade or flight. All Men, giants and drûhn were struck equally, lords and thralls alike, with such sudden evil that all wars ceased, all quarrels ended and no land was left untouched. Only the sâvurin were spared.