Spellbook - Additional Hit

Spellbook needed to learn Heavy Hit\n\n<Acquiring Class>\nStorm Blaster\n\n<Skill Effect>\nP. Atk. increased\nP. Skill Critical Damage increased\nPvE Damage Bonus increased\nP. Skill Power increased\n\n<Enchant Skill>\nDouble Impact → Triple Impact\nPower increased\nNumber of Attacks increased to 3\nCooldown reduced\n\nFlame Explosion\nNumber of Attacks increased to 2