The Magic Mirror is a fairly easy boss. Its primary move is to create reflections of itself after sinking into the reflective surface and rise with Magic Mirror copies in either a path or circle formation, which shoot fireballs from their mouths. However, the real Magic Mirror can easily be spotted, being the only mask that has a smile on its face. Once the smiling Magic Mirror is attacked, the fake ones will vanish. The Magic Mirror can also maneuver as an attack, which is followed by frame-by-frame motion. It can also charge straight at Terra/Aqua, this attack can easily be dodged by moving to the left or right, or by guarding. Sometimes the Magic Mirror will float over Terra/Aqua and shoot fireballs from above.
When playing as Aqua, beware of the occasional white fireball the boss shoots as it can confuse her, mixing up her movements.
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