Lissandra needs help.
Lissandra has some serious issues, many of those which were caused by unnecessary nerfs after her release. The result is a champion who embodies the following predicament: If you try to play her as an assassin, you're better off with LeBlanc. If you try to play her as an utility mage, better get Orianna. The niché she's trying to fill has been taken over by far superior champions before she even came out. So what's her purpose? Why even pick her?
Her ratios are laughable and so is her range. Then there's her awful movespeed which simulates a snail skating on ice and a badly designed passive which serves no other purpose than to make up for her ridiculous mana costs. Her slows are subpar and her Q doesn't even affect any other targets after hitting the first one. Her cooldowns are insanely high and her damage-output is less than average.
Her ultimate is among the weakest in the entire game in terms of magic-damage and can easily be avoided by staying out of her auto-attack range. Even if you manage to hit all 5 members of the enemy team with your ult, it hardly makes a difference. Meanwhile you're waiting to get bursted down once the Zhonya's wore off since your awful range has forced you to dive into the enemy team.
Compare that to a 5-man-Orianna ult - now that's an entirely different story. Far superior range, a lot safer and a clearly superior payout for hitting it. Lissandra is the very definition of high risk, low reward. And yet they attempt to release a new skin (Blade Queen Lissandra) without fixing any of those issues. Sorry Riot, but you'll have a hard time selling that one.