受难 periodically spawns
受难之魂 while in combat. Afflicted Souls will begin casting an uninterruptible
痛苦呼号, which will reduce all players Haste by 100% for 10 seconds. Afflicted Souls have
诅咒之魂,
剧毒之魂,
染疾之魂 and dispelling one of these debuffs (non-Magic dispels), or healing the soul to max health will cause it to stop casting and despawn.
痛苦呼号 has a range of 60 yards, and can also be avoided by line-of-sight.