The Kylgahran

Terror descends into lands adjoining the Middle Sea on a two-mooned world called Trascera. Down out of the northern reaches, a vast hinterland of snow-laden plains and hard-eyed warriors, the Gyr are coming. Mysterious nomads, fierce and unrelenting in battle, the Gyr press south in their thousands, led, it is whispered, by Aachen Holt, an undead sorcerer, born some five centuries ago. Holt is adept in the art of dark casting, the sinister underbelly of the Yir, magic, as it is known on Trascera