After trying some games with it, I believe AP Bruiser Evelynn is the most optimal way to play her.
I know this might seem strange. After all, for the most part Eve is pretty okay at the moment. But, seriously, if you've not tried an AP Bruiser build on her, do so. It's really, really good. The build goes like:
. Rush these two items as your core. From then on, go tank, and I mean full tank on your items.
, just to name a few.
If you think about it, it shouldn't really be too surprising.
has a 1.5 second cooldown, which can be constantly activated by Evelynn's Q. In addition, her E applies on hit affects, twice. One for each slash. Granted, I don't think IBG "double procs" on her E, but even so it has great synergy with Eve. And it allows her to keep pace with her targets.
Eve also has pretty strong base damage. 100 base damage on Q isn't quite as high as it used to be, but considering it's 1.5 cooldown it's still pretty high. Her E also has a decent 230 base damage with fantastic ratios. (Which you won't take full advantage of, but it's fine). And with her ultimate... it's more it's ratio is crap rather than it having good base damage (although it is decent). But, the AOE slow and shield you get from it will make you an absolute menace with your durability.
With this build, you can really be formidable. I'd say it's strong enough to make Eve an adept duelist, or at least on par with her AD builds, which may not be bad duelists to begin with.
The big thing, I think is though, is that you can permaslow a target. And when an enemy dies, you reset your speed boost and keep training 'em down.
Well, I've been trying this build for a while... but across some time. I only have one game to show, but pls. Take my word on it.
Obligatory 