How to counter the current Ahri?

Ban and wait for 5.3.

Just ban her and wait for 5.3. She's just too good now, I wouldn't recommend going up against her with anyone.

I haven't lost against her as Cassiopeia. The early mana nerfs mean you can't fight her immediately at 2, but if you play well and regain mana through last hitting with E you should be able to get a kill at 3.

Take Barrier / Flash, always.

Ok apparently Annie is good against her. I will try that if I get stuck against her again.

You don't beat anything with that kind of mobility. Assuming equal skill. As soon. As she's 6, your jungle can't even help. Look at kalista, look at Lucian before his many nerfs, look at zed, look at lee.

I always found champions like Swain to be pretty good against her.

So uh...either bring someone with slows, snares, or both? Or someone who can outsustain her maybe? I unno, haven't faced her since her revert yet.