After you beat the whole game, save right before you defeat the Dark King. Now go to fight until you get to level 41. You should have around 42 White Spells, 21 Black Spells, and 1O Wizard Spells. Now fight until you get around 1O,OOO,OO Extra Points. Your spells should have increased by 2 or 3! Do this until you have 99 in all three types of Spells.