FLASH/drive is a Blind ability that KAY/O must equip before casting. Upon casting, he will throw a flash grenade that detonates after a set amount of time. KAY/O can use Primary and Alt Fire to control the duration and length of the throw; Primary Fire throws the grenade at long range with a longer windup, whilst Alt Fire throws the grenade at short range with a shorter windup.
FLASH/point's detonation effects work like any other flash; it blinds anything in its line of sight and can have its duration reduced by distance or the direction an affected entity is facing