Soraka's Q is a problem

I'm a Soraka Main, myself, but her Q is now like the bastard child of an Ahri Q and a Vladimir Q with the added bonus of a slow. Most disgustingly is the fact that it's 40 mana (on a champion tied for the highest lvl 1 mp5 in the game and the 7th highest total base mana at 18, no less) and has a 5 second cooldown at all ranks. At level 8 she can almost cast Q every single time it's off cooldown and not run out of mana. If it weren't for the fact that she's not a remotely threatening roamer, Soraka in her current state would be a cancerous mid laner. Her sustain in lane due to how spammy Q is now is potentially on par with Cho'Gath.

The original Soraka Q didn't have the healing passive tied to it, meaning that you gave up sustain for damage by maxing it instead of Q. Since her Q cooldown was higher at early ranks, her poke output was a lot lower, and now that the mana cost is 40 at all ranks, the spammability just basically means more damage and sustain.

tl;dr Q is really overloaded, and it makes a good Soraka even more toxic than she was before.