From Generation V up to VIII, the move Charge Beam, which normally has a 70% chance to raise the user's Special Attack stat upon a successful hit, suffers from an overflow glitch if the user has the Ability Serene Grace and uses the Move while its side is under the effect of the rainbow from the combination of Fire Pledge and Water Pledge: under these circumstances, the additional effect chance for Charge Beam overflows and becomes 24%. This glitch has finally been fixed in Generation IX.