The skill Stars of Light hits 25 times for 1 full channel. Pretty sure it's only supposed to hit 5 times.
It hits 5 times, than combat log says we got a stack of Stars of Light (but the buff says Brilliance Award), than hits 5 more times and this continues till we get 5 stack of the buff.
Please also note that the buff (Brilliance Award) says that Light dmg is increase by 15% but each consecutive hit is actually decreasing dmg before the buff ticks and it starts from the original dmg and decreases 4 more time.