Talk:Kassadin/@comment-155.56.68.214-20110914080229/@comment-134746-20110914140841

All damage reduction effects stack multiplicatively, magic resistance and armor are countes as one source of damage reduction against physical and magical attacks respectively. About the attack speed bonus, I believe it counts 15% of the raw damage that the attack would have done without any resistances and transforms that number as % AS for 4 seconds. The AS bonuses stack but DON'T refresh the 4 second duration, rather, each magic attack gives one different and individual AS buff that lasts 4 seconds.