Well, both really. As in, he needs to be Epic to have all of his displayed Abilities. Mostly the issue was me fitting in Explosive AftS with all of his other tricks, without full knowledge of one of his classes, which I recovered today. Luckily for me, not only is it fully possible, but it actually gives me an easier time writing some portions of Remember
However, despite having full casting in 3 different spellcasting variations (arcane prepared & spontaneous, and divine prepared), he doesn't have Epic spellcasting, not that I'd give it to him anyways.