Apparently, I was useless
Apparently, Soraka had no impact at all on the game according to Karma. Personally I find Lux's surprise at the end very fitting as I kept undoing all of her damage and rendered her almost useless. A pity it was a loss but Anivia and Jinx kept getting caught out of position near the end and if I wasn't right next to them when WW with Sated ulted them...well not much I can do. Anyway, I got a good chuckle off that Karma.
