Fighting Trauma in Ultimecia's Castle

    Your strategy in this battle depends on which battle commands you have unlocked.  Hopefully you have Magic and Item.  Use magic spells or GFs or Items, depending on which you have unlocked.  If you haven't unlocked any of these, you'll just have to go for attacks.  When Trauma adds the little Mini-Traumas in the battle, don't bother fighting them, just attack the main boss; they will die when he does.