Alright, stat out with your regrowth and build it to a philo as soon as possible, after that build you 1speed boots, now you can get either your kages lucky pick early if you need more farm, or a shurelyas (keep it on the 1st slot so you can have it easily accessible via 1) it will save your allies ***es when your chasing or running. Next comes your boots of lucidity, and then your spirit visage to give you max cdr with 3 items and 15% (or 10% i dont remeber) increased heals. Deathfiregrasp is next, keep it on the 2nd slot for accessibility. Use it on high valve targets right before the battle starts (carries, supports) and itll take a chunk of there health, or use it as a finisher for running enemys if your shurelyas is on cd, or if you have no teammates around to take it (it deals a min of 200 damage before MR). Next is your Lich Bane, because if youve ever played soraka, you know that you always get that 1 banana off before they run and you hope it will kill them, but it never does. With this, you'll be banana-gibbing everybody all day erry-day. Abyssl is last, mostly because everything else is more important, but its still good if no one else has it on your team.

ALWAYS BUY WARDS/ORACLES WITH YOUR EXTRA MONEY AND CHECK FOR WARDS IN YOUR JUNGLE/THE RIVER.