Soraka

I think most people would agree (besides Soraka mains, sup mains, or some duo q adc mains) that Soraka has a really unhealthy kit. Now I should specify, its her heals that are the most annoying. In the laning phase, or in team fights the person Soraka is healing can't die. Soraka gets to sit in the back line spamming her heals, without any problem. I think she needs some heavy balancing that keeps her toned down and adds counter play to her.

My main suggestion is a change to her heals, I think that she should get charges that restore over time. It should be a small number, and based on these charges that's how many times she can heal. To compensate you could make heals based on missing hp instead of a flat amount. The spell would still have a cool down though, just to make sure she can't completely negate the burst of someone by spamming all of her charges on her carry.