I swear. They must decrease aggro! I cast 2 spears, 2 dots, 2 terror spells on a DHK mob, and I lost aggro to a Celestial Elixer + 2 Ethereal Light casts from a cleric. Plus the spear spells don't generate nearly enough aggro as they should. Terror of Marlow costs 51 mana no damage, Spear of Agony costs 200 mana and does like 700ish damage, but not even half the hate is generated by Agony.