Enemies you encounter around the Trabia region include Mesmerizes and Gaylas. The former offers Mesmerize Blades and the latter holds Meltdown spells at level 30+. The Gaylas also drop Mystery Fluids, which allow Quistis to learn Acid. If you come across a Blue Dragon, mug it for Fury Fragments or defeat it so it drops Dragon Fangs. They’re really rare though. You can kill them easily with a Death spell.