Elo <3.
I imagine he took the XP masteries, quints, and Zilean passive, and jungle/laned. His team got dragon every time it was up (and let him lane). Towers and kills round out the board (unless they got a reaaaaaaally early Baron, but I guess you would've mentioned).
And yes, Soraka is so good earlygame. :s. I'm not sure I like the way EC is changing the game: it's not out early enough to stop her earlygame DOMINANCE, but it shuts down any healing so utterly lategame.