Nerf Camille's passive so I can actually duel her at any point in the game.

Try dueling her while it's on cooldown.

Granted, as a split-pusher, you usually don't want to duel with her at all.

Some champs are meant to be duelist.

Shes one of them.

Don't worry, OP.

Just play Ornn and literally slap your face into her, her passive up or down, doesn't matter; she will be forced to taste the kind of bullshitery her existence forces her opponents to deal with.

Better yet, play Sion. You almost autowin against her. Not to mention there is also the big plus that she can not use her ulti against you because if she does, you just activate your ulti and you instantly become a powerball that bounces in her ulti for some reason.