I am pretty sure it was EB. I really dont know if he has a cleric level or not but he really seemed like a barbarian.Well, if he's a warlock, he's already using non-core books (specifically Complete Arcane). Warlocks are built on Charisma instead of Int. Is it possible that his ranged attack was something other than Eldritch Blast? If he's strictly a Barbarian/Cleric, maybe one of his domains nets him an EB-similar ranged attack?