Yasuo

Can dive whenever he wants and kill you easily. He can also cancel your Q and E.

Katarina

Champ similar to Yasuo. So much damage.

Zed

So much damage and also can cancel your Q and E combo.

Fizz

Can cancel you Q and E combo. You have to poke him hard in early game. His ULT damages you so much and he can easily dive under turret without taking almost any damage.

Kassadin

At early game is easy but mid and late game is so hard. Feeding on him is not so hard but if he's feeded because of you the game is pretty much lost.

Anivia

Is pretty easy to feed on but W is annoying.

Malzahar

Zoe

Her stun is long. If you won't hide behind your minions she can one-shot you easily.

Hecarim

He can dive under turret with his ULT easily.

Cho'Gath

Much damage and a stun makes you unable to do anything. You have to keep long range playing against him.

Ekko

Orianna

Her damage is pretty high and her abilities are fast. You have to keep a long range.

Qiyana

Diana

Sylas

His ULT steals your ULT. Remember that in team-fights.

Syndra

Taliyah

Azir

Cassiopeia

Brand

Lux

You have to avoid her stun. Does pretty much half of the work in team-fights. Easy to feed on in early game.

Pantheon

Ryze

Skarner

Vel'Koz

Zilean

Aurelion Sol

Morgana

Her stun is long. You have to avoid it as much as you can. In team-fights she's a great support even when she's playing on mid.

Talon