Viktor need an actual passive?
So Viktor starts the game with the Hex Core, we all know that - but is it worthy of taking up his entire passive? The Hex core is a decent AP item when fully upgraded (3000 GP) however it also takes up an item slot. So he has a passive in which he has to buy to improve his performance, taking away from other items he could purchase, AND end game it takes up a slot while other players can have full build, plus a usable passive.
I don't think he needs anything ground breaking, but a little something should be in order.