as early as level 2 a simple q w will take 40-50% of your hp
the only counterplay is being extremely safe and leaving lane after one combo and rushing an abyssal scepter, if you don't do these things you will get die in .2 seconds to easy to land low cooldown abilities. Even with abyssal scepter it is sketchy whether you will survive or not.
Dynikus2 votes
specter4241 votesWouldn't do too much to a competent Leblanc. Not only will you never be able to ult her, if she can't kill you (which she can) she will just roam bot.
Dynikus2 votesWouldn't do too much to a competent Leblanc. Not only will you never be able to ult her, if she can't kill you (which she can) she will just roam bot.
Galio is basically the counter to burst mages. LeBlanc can be annoying to play against, but pretending she has no counter 
is just silly. She's very squishy. CC works wonders as well.
specter4241 votesthe only legitimate one of those is malzahar and even that can be iffy
Dynikus2 votesShe's a burst mage assassin that comes at you with everything but the sink, then runs away while she waits for everything to come off cd as assassins tend to do. fizz can troll pole her burst, talon can ult, galio's entire kit revolves around building a ton of MR and taunting you so you can't run, malzahar has suppression. There are plenty more, those are just a few I thought I would mention.
Rather than just say
this champion is broke fix it!!
Consider learning how they work and how you can play against them.
Vallalan2 votesthere's not much counterplay to a fed Leblanc and early lane leblanc is pretty strong. that said, two of her key damage abilities are indeed dodgeable even if they are fast and hard to sometimes. another thing is early on her cooldowns are quite long so if you are prepared to eat that 40-50% combo then eat it and turn on her, she has nothing for a solid 15 seconds or so. her Q is all she can use and by itself is not worth using due to its mana cost relative to the damage it gives early on.
post 6 she is hard to deal with, but by then you should have your negatron cloak or hexdrinker. once you get some MR leblanc cannot 100 to 0 or even come close to it. it is much harder for leblanc to kill once you build MR which is way too easy of a counter. Leblanc unlike most other assassins is pretty much negated by building defensive items.
the amount of games I've played leblanc only to be useless because I couldn't end in 20 minutes is unreal. people build banshees, abyssal, aegis, etc and you are an assassin that now is a glorified mobile poke mage.
Shaydrox2 votesMechanically no, but her main counterplay would be not feeding her and extending the game's duration past 20 minutes. I've seen around 200 fed LeBlancs in my life, and only 2 of those had any idea how to remain relevant lategame.
Åeolus1 votesEarly her spells have a high cd. Usually when I'm playing Ahri if lb uses her combo on me at lvl 6 I end up having 400 health and I engage on her immediately and kill her. Also if you have trouble against lb just stay back and farm. Don't push the wave just freeze it and stay out of range of her w.