Talk:Expose Weakness/@comment-15667791-20131203003631/@comment-24385282-20141109010818

He knows because it specifically states, and I quote, "Your damaging abilities debuff enemies for 3 seconds, increasing the damage they take from allied champions by 1%." Emphasis on "...the damage they take from allied champions..." It does not say "...the damage they take from allied champions excluding abilities that apply on-hit effects..."