Magic Junctions

Realize that the more you have of one spell makes it more powerful when it's linked. For example, if you have 100 Cure 3 stocked you can attach those to your HP stat and you will get many more HP than you would if you attached 20 Cure 3 to your HP. Other than that, just scrolling through the spells you can junction tells you what is more powerful with yellow letters... just remember that you can also junction elemental protection and offensive power by pressing left on the junction menu. This helps a lot against stopping some of the more powerful magic later in the game.