The official GemStone IV encyclopedia.
Divine Fury allows the Cleric casting it to unleash the weight of divine displeasure upon a single target. This blast initially takes the form of a blast of searing plasma, followed by additional critical waves of the element or attack style favored by the patron Arkati or Spirit.
The minimum amount of hitpoint damage dealt by this spell is based upon the cleric's training in Spiritual Lore, Religion.
The first critical blast is plasma. Additional critical strikes (of sequentially lower strength) are based upon the Cleric's [CONVERT (verb)|]] status. These critical strikes have a high probability of leaving the target stunned.
For Divine Fury and Divine Wrath (319), critical damage is based upon the cleric's patron. The below tables specify the type of critical damage favored by each of the Gods.