League of Legends, and why Diana is broken again.

Played a game of League as Diana. Started off bad because of a duo AP bot-lane (Me and an Ahri) vs. Nidalee and MF. But then I started roaming and farming. Ended up with a tidy 200-ish CS. But the point is, after she was released she was broken as hell. I could 2v1 from half health at lvl 6. Then they nerfed her to the ground. Recently they changed her W (which is a shield with 3 orbs around it, if the orbs touch an enemy they explode and if all 3 explode the shield is refreshed.). Now instead of refreshing the shield, it adds the fresh shield on top of the old one allowing her to absorb alot more damage. She is also broken again because of this, it just takes a little longer to kick in! :>

 -Xalaram