I play Ahri a lot but her style is so fast that I can't really tell what happens in these situations.
If I use my ultimate next to an Invisible Shaco or Twitch does it deal damage to them?
If they are next to minions what are the priorities if they are invisible?
And with Brushes. If an enemy champion is inside a Brush and you know he is in there and you use your ult but you're still outside the brush (in this case you don't have vision of him yet) does your ult damage go through the brush to the enemy or you must have vision of him?