I know Serene Grace doubles the chances of extra effects, and a King's Rock makes the target flinch occasionally (10% chance). So if I give my Togekiss with Serene Grace a King's rock, will the ability affect the item at all? So will moves like Dazzling Gleam, which originally has no chance to make the target flinch, have a 20% chance of making the opponent flinch? Also, since Air Slash has a 30% chance of making the opponent flinch, what will the new percentage be with Serene Grace and King's Rock?