[Anchors]

Storm's useful early on, but later the damage pales in comparison to your other spells, not to mention that your tag won't appear on it til the monsters can move (about halfway through the animation)... Easy KSing targets, not to mention Storm's got a somewhat long cooldown.

I'd save mana storm for later and, if you get CT first out of wind/earth, immediately get WB after. It's fast enough to almost fit in twice in the earth cooldown, so you can smack a mob with earth and wind blade them as they come to you.

Either way, master one and then the other, because in my opinion mastered one/low leveled other is better than both half leveled... Earth's slower and more narrowly ranged before mastery, and wind has a positive failure rate before mastery.