User blog comment:Herzinth/Eena, the Mad Mirror/@comment-1330314-20150216211552

You have an amazing theme, and a lot of the abilities in your kit are really well-designed. Comments and criticism:
 * Oppressive Stress looks really nice, but I think you can condense this a bit further: instead of having Eena die after three seconds, you could make her immune to damage and crowd control for seconds and have her fear nearby enemies for the same duration, which would give her a shot at escaping otherwise lethal situations.
 * Thunderous Doubt looks fantastic. I'd say the ability scales perhaps a little too well, but that just boils down to opinion.
 * Flurred Anxiety's ally cast is great, and could make her an amazing support. I'm not a fan of the enemy cast, though, as it's pretty much 's old point-and-click silence, which was both incredibly frustrating for her opponents and boring to use. I'd say you could just keep the ally cast, and balance from there.
 * I feel like there's a lot of wasted potential in Forced Reflection. It's like a that can move but do nothing else, and it has no interaction with the rest of her kit at all. I think you might actually benefit from making this her ultimate, and have the rest of your kit synergize with it in some way.
 * Crippling Vengeance is a cool nuke, but I don't think it really does much for the rest of Eena's kit. You have a really good support/mage kit with her passive, Q and W, but this ultimate doesn't really contribute much to her supporting power, and doesn't mesh entirely well with her mage playstyle (Eena has one root, but can't really pin her targets down otherwise). I think you should make Forced Reflection Eena's ultimate (a mirror image would be iconic on a mirror mage), and have the rest of her kit work with it, and as her new E you could try to find something that would play on Eena's theme of reflection while working as both a support and a mage ability (I'd go for something with damage and utility/crowd control).

The idea of a mirror mage is a really rich concept that Riot hasn't explored yet, and I think you've done a great job with a lot of the elements in your kit. However, I think you can develop on Eena's theme a bit more, and go deeper with her clone mechanic, which is the perfect medium for mirroring abilities and mechanics. Right now, your kit's full of abilities that are individually pretty good, but that lack overall synergy with each other, and I think you need to flesh out some kind of combo or optimal use of abilities for Eena's playstyle.