I'm with Claytus on CM. If you go aura it will be great for roughly the latter half of the laning phase. Before that the low level skills generally aren't that useful and afterwards people start getting mana boots and the aura becomes superfluous. It's good but it's like the #3 reason to pick her. If you do go for an aura build at least start getting it on 3 instead of having only one skill for the first three levels. The ult is somewhat awkward too. It has the potential to be devastating but you'll rarely get to use it for full effect. I prefer 4/4/0/0 or 4/4/1/0 early (usually the latter with aura on 3), later ult if I feel like I'll be able to use it, a little more aura, and stats. I mean have you seen the numbers on her level 4 skills? 250 damage and a FIVE-second slow in 400 aoe from a 700 cast range? Followed by a 3-second immobilize? Yes please. Not only is it much more satisfying to play, being a powerhouse in fights tends to be more useful for the team than being a mana battery with some weak disables.