Related
Starting Weapon
Flail
Limit Break
Slot
Selphie's Limit Break gives her access to random Spells which can be cast in random amounts. These Spells don't come from her stock, and she doesn't need to have them stocked to use them. Not only that, but she has four special Spells that are only available to her during her Limit Break. Each time you use one, it will be added to her status screen, so try to see all four.