In Kingdom Hearts Union χ, Laser Barrage is a special attack that targets all enemies. It costs 4 special attack gauges to perform. It lowers the defense of all targets by 1 tier for 2 turns. It inflicts more damage the lower the slot number. Laser Barrage +6 also raises Player's Upright-based strength by 3 tiers for 2 turns.
Learning Laser Barrage
Kingdom Hearts Union χ