The user gathers all its light energy and releases it in one shot. It may also lower the foe's Sp. Def stat.
Flash Cannon is a Special Steel-type move in Generation IV. It has a 10% chance to decrease the opponent's Special Defense by one level each time it is used. The TM for this move can be acquired in two ways; as the 1st place prize for winning Tuesday's Lottery at the Goldenrod Dept. Store and awarded upon Byron's defeat.