Soraka nerf

Because she's been dominating alot of the early game. Her heal just had too much forgiveness for mistakes your adc did.

Because ADC are still trying to find out what this item does

I'm guessing it's to hurt her early game.

because she is freelo?

Personally not the route I would have taken. I'd have cut her values instead of cooldown so she couldn't heal more in one spell than some of mages do in one spell early, for less mana. Basically I would have made damage more resource efficient than healing. Soraka lanes could play safe and sustain the occasional poke that would happen, but if they tried to aggressively trade they could actually lose for it.