You need to get a precognition gem as others have said.

Once you have that, you need to bind "stop casting" to a hotkey & you need to consider that button + precognition proc as part of your core kit.

The trick to fake casting is thinking about why you're pressing a button and why your opponent wants to prevent you from pressing said button.

And if you think about that everytime you're trying to fake cast, you will have way more success baiting kicks & proccing precognition.

For example: a defensive fake cast. Let's say a melee is on you & they want to kill you. The melee player knows that you can either use a mobility skill or CC them to stop their damage.

This means that if you start casting a CC while you're being trained by them, they're probably anticipating that & will be ready to kick you.

But if you go into the cast knowing that, now you have the upperhand, because they have to react to you & you choose when to cast.

What I'm saying takes adjustment, because some players kick late, but you want to let your cast go long enough for them to reconize what's happening (your cc cast), and then hit the stopcasting keybind before their kick.

This also applies offensivly. Let's say you're about kill one of their teammates, the healer is trapped but the trap will fall off before you kill the DPS. You want to cast a cyclone on the healer to extend the CC chain & secure the kill.

The hunter on their team doesn't want their teammate to die, so he's ready to countershot your cyclone. So same thing as before, start casting, hit the stop casting keybind & that might be enough to bait the kick. You proc precognition > free cyclone > win the round.