Sion's afterlife/Passive isn't considered a champion or something.... because when you are alone at baron, you cease to do more than 70 damage per hit at full build. (I was hitting 400 before my opponent left) I think this is an oversight, and could probably be addressed easily.
i do believe that is not a bug since the bonus damage your recieveing is atleast againest champion and your ad plus 10%health damage to enemy champions with his passive,where as i dont believe you get the bonus ad on minions or monsters, ill have to check into that but i think thats what your unning into, a DEV will confirm or correct on that one...
Updated: he can have a max of 75 damage on monsters on his passive, so thats why your only dealing that low amount of damage
