Wonder Boy in Monster World/Magic

Magic
Shion can learn a couple of different magic spells, each with various different effects. Each magic spell has a limited amount of uses, displayed by the amount of blue crystals under the spell's name in the Pause Menu. When your magic is used up, you can rest at an inn to replenish it. Also some higher level monsters drop blue chrystals. Picking them up will replenish your magic as well.