Isku 440hz イスク440hz Rarity: Req: 450 Type: Classes: Statistics Stats +0 +10 Operation Cost S-ATK 520 1040 Grind R-ATK Attribute T-ATK Affix Potential Warrior's Song Lv. 1 Damage is boosted by 11% and damage received is reduced by 10%. Lv. 2 Damage is boosted by 11% and damage received is reduced by 12%. Lv. 3 Damage is boosted by 11% and damage received is reduced by 15%. Drop Info Additional Info