Hârn: The Knights of Kaldor
The Bukrai is an orb of darkness of uncertain origin. Some believe it is, or gives a vision of, one of the First Gods. Morgath, who is said to have been different then, came across the Bukrai and peered into it. His decent into madness thus began.
The Bukrai grants a power, known as the Shadow, which gives power over the dead. The Shadow is greatly feared, and can corrupt even the most pure of heart. Morgath’s priests wield the shadow, and use it to create foul, undead creatures.