Buffs itself with "Wrath of the Diminutive" (60-second spell reflect, damage shield, rune). You must do about 1 million HP of damage to overcome the rune. If you do this, your group gets healed. If you fail to overcome the rune before it fades naturally, he AE's "Punishment of Wrath".
PHs are "an upright kromrif"
Location for your "kaelshard.txt" map file (note for all known Kael named spawn locations, see this quest entry):