Acid Blast just doesn't show up on the Power Feat screen, which is weird because according to her character sheet, Acid Blast is an available skill regardless of whether her role is a Celestial Sorcerer or an Abyssal Sorcerer. Yet, I can't choose that power feat at any point in the game where you gain a Power Feat after choosing your role card (3-5, 4-1, 5-3, and 6-1). It's not linked to any other Power Feat like Arcane Blast and Fire Resistance. So what's up with that?