Metallic Sound

 shouts a high pitched sound to damage a single target's HP and SP. This skill will cause more damage to enemies affected by Sleep or Deep Sleep. The level of Lesson learned increases damage drastically (60% MATK per level of Lesson).

Patches

 * Patch (2019 Apr. 17)
 * Skill cooldown is reduced from 3 seconds to 2.5 seconds, and skill delay is added for 0.5 seconds.
 * Patch (2018 Aug. 01)
 * Metallic Sound Max Lv is increased from 5 to 10.
 * Damage is doubled.
 * The SP reduction effect of the target is removed.