From their website:
The vicious creations of Everblight are as varied as that dragon’s fevered thoughts. The scythean is the culmination of his experiments and dreams of slaughter. The hulking monstrosities are birthed in the bloody cauldrons of Everblight’s corrupted acolytes and sent forth to rend flesh from bone. When a scythean falls upon its prey with its terrible claws, its fury is so great even the most resilient of foes is torn asunder in a savage orgy of gore.