She is broken, she can burst almost all midlaners in a matter of seconds even if they get some MR, if you manage to get away she will just combo you again when you get back in lane with her insanely low CD ult, especially when you buy items with CDR.
Some please tell me these stats aren't broken:
Cooldown:** 40 / 32 / 24 ** Cost: 1
LeBlanc can cast the previous spell she cast.
Mimic: Sigil of Silence: Deals 100 / 200 / 300 (+60% of ability power) damage once on impact and again if the mark is detonated.
Mimic: Distortion: Deals** 150 / 300 / 450 (+90% of ability power)** damage on impact.
Mimic: Ethereal Chains: Deals 100 / 200 / 300 (+60% of ability power) damage once on impact and again if the target is rooted.