No mobility, single target, but does her job? Better nerf.
The screenshot is from "today's" NA stats (meaning yesterday or the day before). It's inflated and higher than it should be due to it being 44% in Bronze, but the sample size would have been too small if I selected a single league. A week's worth of stats aren't available yet but when something is so fucking obvious as this, is it really necessary...
A single target mage, who's entire game revolves around being able to bully the enemies early to transition into a mid game (always had a shit late game) to pick off targets now has both those attributes removed. Her laning is now hilariously weak. It's not even worth attempting to harass especially with the mana nerfs this season, and going for picks isn't even reliable when her Q->E combo passes right through the middle of champions, even large ones.
And before anyone says "Durr hurr her win rate in Korea is 48%!". That's the previous patch, the stats aren't updated. It was 48% (probably inflated by Bronzies again) before the nerfs.
Syndra has the lowest win rate in the game now? Better nerf Sona. Though if the Ahri nerfs go through I'm sure she'll be even lower than 40%.
2 years from now some tools will say the same thing they said about Karma, Irelia, etc. That she was "fine", when in fact everything else in the game had to be nerfed 5+ times over before those champions became viable again. The reverse power creep is insane.
Edit: I see some people say good riddance that this champion is ruined. It's never good when a champion is ruined. Aside from the obvious reasons why, it then increases the effectiveness of others, then they're eventually nerfed, and the cycle repeats.