As is your proc chance hitting many targets will be high as in the more targets hit the more likely you are to proc. The change for divine storm only limits the holy power gain to one per cast instead of multiples. I see this as a negative change to boxers but a positive change to paladin and game design. They don't want an aoe fest and a weak aoe that feeds itself and gets stronger when you spam it is contradictory to the design goal lol big words day