League of Legends Patch 10.15 is live with a nerfed Twisted Fate and several other relevant changes impacting the mid lane meta.
5 Worst Mid Laners in League of Legends Patch 10.15
Twisted Fate's Pick A Card (W) was nerfed in Patch 10.15 in an effort to reduce his early game strength in favor of scaling potential. Twisted Fate looks to get ahead early and maintain a consistent gold lead throughout the game. While this is a minor nerf it will certainly reduce his ability to attain a significant lead as well as his overall power level.
Lucian mid was a pick all too common on Summoner's Rift until lately. The increased prevalence of mid lane champions like Nocturne and Garen significantly reduce the power level of Lucian. Even if Lucian does manage to get ahead this picking him for mid likely puts your team at a significant team composition disadvantage.
Akali currently has one of the worst win rates in Patch 10.15. Akali has been struggling mid lane for quite some time and with no balance changes for the Rogue Assassin in the current patch Akali should be avoided.
Corki faces many of the same struggles as other AD carries in the mid lane. Although Corki mid offers mixed damage which is beneficial in balancing a team composition he is currently at a low power level. Other mid lane champions stand to beat Corki in poke, mobility, and damage resulting in his place on our list of worst mid lane champions in Patch 10.15.
The Emperor of the Sands fittingly takes the crown for the worst mid lane champion in League of Legends Patch 10.15. Azir currently has the worst mid lane win rate of any champion indicating a need for buffs. While Azir is a high skill cap champion that is able to make some cool plays his current damage is simply too lackluster even if he looks cool to play.