Magic Skills
These are a bit harder to use in Sword Art Online: Lost Song but can make a big difference in combat. You’ll have many options to choose from, but as with all abilities in the game, you’ll only gain experience for those you use. If you want to level up quickly, you’ll have to make a difficult choice. Limit yourself to only two or three Magic Skills so that you don’t spread out the experience too thinly.
Each skill grows more potent with use, adding more recovery to the player, longer de-buff times to the enemy, and increased damage. Only you know how you’ll want to play the game, so pick skills that fit into that and use only those. Also keep in mind that using magic takes away from time you could use to earn Combat Experience. If you want to be more weapon-based, then limit yourself to even less Magic Skills to make leveling up easier.