Since new Warmog, the amount of HP regen is amazingly hight, Soraka does not benefits from just health but OH GOD that health regen. The longer the game, the stronger you are, you'll be tanky as ****(Around 3200~hp), enough armor and enough mr for not being a squishy but rather as tought as a bruiser. Oh and the health regen, 1.2 seconds heal...HUEHUEHUEHUEHUEHUEHUE.

The build has it's own notes and you dont need more than that, pretty simple, straigth up build, that will make your late game really, really, really strong(You'll health regen is amazingly high, you heal every 1.2 seconds, you can also spam your other abilities, you're ''bruiser'', so you wont get one-shotted, since you'll be hard to kill. You may not heal as much as other more ap sorakas, but you can heal 'without' cost, even more often than so, so yeah, not bad lategame.

Pros:
Everything I said before.
Cons:
Expensive build and rather inefective in games that last less than 30 mins.

You're full build, you're inmortal, really, your team will become inmortal, you'll give them everything they need: Movement speed + Attack Speed + On-hit effects + Healing + Increased damage with the new Zeke + Rage to the enemy team.

If you dont have the order of the Banana skin, this build wont work...
Well it will work but not as much.