I have listed all champions I deem valiable in mid against Katarina, the rating will explain how the lane is made for evenly skilled champions against each other, but after reading this guide you will have the knowledge to be a top-notch Katarina. One worthy if Diamond Elo. So you would be able to outskill anyone and win from champions the odds would say you would lose.
1-3/10: If you lose this stop playing Katarina, sticking with Soraka might be your thing then.
4-5/10: Easy setup, but watch out not to get cocky, you might be outskilled and with some ganks the opponent can start winning.
6/10: Skill lane should be even, depends on the skill of the mid champions and the jungle ganks.
7-8/10: You are in the disadvantage the other champions counter you, but with some skill and ganks you can win.
9-10/10 You should always look if you have a top you can swap then. If you can't be very careful and just farm, don't let the enemy kill you and look if he gets cocky and you might be able to kill him. Just try not to feed and survive. Dying loses you time, exp and cs. So just be careful. This lane is annoying but remember that if you get true this by staying calm you will still be useful in teamfights later.
5/10 When you dodge the skillshots and wait till she wastes Q before you jump to her, you will win the lane and outfarm her. Killing her proves to be difficult because her taunt breaks your ult and she has 3 flashes with her ult.
6/10 From level 6 she can burst you down more easly, make sure you don't let her do that twice for free, when you are both around the same HP just give her a Q+E+W combo so you trade evenly. Upon hitting level 6 just ult her, even when you cannot kill, this way she will have lower hp, won't just jump to you and give you a easier time to farm.
4/10 Don't let her land her Q and win, don't get egg baited and you win. She's slow and low HP exactly what katarina likes, this is a easy lane but don't get cocky.
8/10 Hard lane, you can outburst her if she doesn't ult, but her stuns are dangerous. Play safe and farm alot, ask for a gank from jungle and you might be able to win lane.
7/10 People underestimate this champion, if you ult he will be able to hit everything. Also when you shunpo to him you are a easy target, and when he stuns you he will burst you to. Make sure to just poke him alot with your Q and don't do reckless Q+E+W combo's. Stay safe, think what you are doing and you will win this.
5/10 Dodge everything she throws at you and you win. Try not to face towards her when you start use your ult. So before you ult, move back a bit your own turret and then she can't stun you with her ult, only slow, and you will continue channeling yours. Easy lane if you stay calm. Mind when you Q+E+W to her she doesn't fully combo you.
9/10 HARD! He's tanky you can't kill him, he farms nice, has substain and has 2 abilities that can cancel your ult. Look if you can swap or go safe on him. And farm from distance. Don't attempt to kill him, you can't.
Kat wants to ult? e
Kat wants to shunpo away? ult
Kat wants to farm? q
Kat wants to poke? w
You want to avoid her at all costs. At this lane-up I advise dodging. You can't win this lane, only be very safe and farm under turret. Only when a very low skill Diana plays against you, you can win. Also in endgame be cautious.
4/10 Easy, dodge her bind and just use your combo and then back off, she can't trade that back to you, and will go OOM (Out Of Mana) and you will win. This lane ain't hard.
7/10 You win the lane, lose the endgame. She's stronger as you lategame, her burst is just to much on you. In-lane just poke her alot and farm, don't let her combo you all the way or sneak up from the back. Never let her run away without a knife in her back.
9/10 Your ult makes his healing less potent, but his silence and fear cancel your ult. He's horrible to lane against, without ganks you shouldn't be able to win this 1v1. He has substain, damage and alot of CC, try to swap top when you are against him.
7/10 He has a strong burst, just be carefull on that, his playfull trickster causes your ult to be unable to work, and his ult cancels yours. Be carefull on this little Yordle.
6-10/10 You can't kill him, but he also can't kill you without ganks. Just don't get caught in his ult (allows jungler to attack you). And just outfarm, he ain't really usefull late game except for his ulti and shield.
3/10 He has some nice poke, but you just outburst him, the CD on his Parley (Q) is lower as your combo, so make sure to stay out of his Q range when your Q+E+W ain't up, and you will win this lane.
7/10 Good Gragas' win from you, but in general you will outfarm and most likely outharras him, just dodge those Q's and don't get caught in a nice Gragas' ultimate and you will win this.
3/10 Just don't jump to him when he's in his turrets. Don't get poked to much and don't let him land his E (grenade) mind that his E stuns when its right in your face. And he can do that when you ult. Be mindfull on this little guy and you can win from him, although keeping up farm might be hard. Try to kill his turrets with your Q and consider taking
?/10 I have to confess I never in around 600 AP mid games played against a Karma. I know how she works but I don't think she would be hard. But I can't be sure. Be carefull and don't get baited by her low HP shield. Ill get a rating for her when she's reworked.
2/10 Easy win, dodge his Q and run out of his Defile (E) after you used your combo. And then this is a easy win. Don't stay around when he dies to. He also has nothing to escape.
10/10 Your ultimate counter... He is awefull, he's strong, he has a silence, he outbursts you. He's only a bad farmer, try to stay behind and try to get ahead with the help from your jungle pre-6. Post-6 you have a problem. Stay at turret and try to farm some minions and possibly take Wraiths. He will own you unless he's a total noob.
5/10 (why 5 and not 6, they're the same champs) You read this guide so you have a advantage, after reading this you know how Katarina works, If your AP (so your burst) is bigger feel free to just burst her, but try to get higher farm. This also can only occure in normals.
6/10 Pretty even, if you get stunned she can do some nice damage. Try to be carefull, you can outfarm her, and outburst her, to help you dodge her ability you can think about maxing
this time for the movement speed.
8/10 Hard lane, she has nice bursts, a possible silence and a stun. Be carefull on her, try to farm, get some ganks from jungle and you can win this.
6/10 When you dodge things you win, if she binds you, you have a problem. The good part is, normally Lux's aren't fast enough to do the bind+Q+ult combo BEFORE you are able to
to your allied minion to dodge the ult. That's a pro. Also don't let her autoattack you everytime pre-3 (full combo)
8/10 He ults you when you ult, he has a nice farming ability and a silence. Be carefull on this guy. But you can win if you use what you know.
8/10 Joke right? AP Yi ain't valiable..... Well yes he is, his Q does some decent damage and his W gives him insane substain, don't underestimate this guy, just farm more as him (which will be hard), and you will be more usefull late game, because he can only rambo with his Q lategame, hope for a kill so he can Q again because of his ultimate.
7/10 Hard matchup, his shield is hard to break and he pushes real hard, you can win from him tho, if you try to poke his shield away before you do your Q+E+W, also try to run around him so he can't hit his E cone.
4/10 Dodge her bind and you win this easily. Use your
to escape her ult. And this will be a easy win, she can farm hard tho.
3/10 Dodge her spears, don't underestimate her Cougar combo's and you win this. She has some nice substain tho, but your burst and reliable harass is just to much for her. Remember to stay behind minions so she can't ult you well. And keep moving.
6/10 Orianna is strong, but it's a pretty even lane,
away from her balls, try to get more farm as her, and your burst is a bit higher, just be carefull on her shield, try to fake comboing her by running towards and throwing your Q and then not
to her, she will waste mana then. Don't tank to much autoattacks from her and outfarm her. You win then.
5/10 You outburst him, don't stay in his combo area to long, your
passive makes his ult working less good (it makes the spellvamp lower). Don't let him bind you and don't stay after bursting him. Also be careful about his autoattacks.
7/10 Yeh Soraka is hard on you, if she has a fast reaction she will just silence after you Shunpoed and then use a lot of Q's and autoattacks while you run away, she wins trades, out sustains you but she can't do the damage in teamfights that you want from a APC, just outfarm her (which is hard) and harass her with your Q's so she will get OOM from the healing she does to herself. And then you will win.
8/10 He has a silence, his silence/blink range is bigger as your Q, make sure after he did his combo you quickly do a Q+E+W combo on him so he won't completely win the trade. All by all this is a hard lane. But if you stay calm you will win.
6/10 She can land her abilties when you
to her, can break your ult. But all by all you win this setup because your burst is stronger, your
can be used to dodge her harass. So pretty even, just farm.
8/10 If you get behind, you can't get back, try to keep up, get nice farm and don't let him harass you. If you want to Q+E+W try to let him waste his bind then jump to him and you will win the combo.
4/10 Hard pre-5, after that you will just win because your burst is higher then. He farms hard though and kills turrets fast, don't gank other lanes alot with this matchup.
4/10 She ain't one of the champs that's strong against you, she has some nice combo, but you can win this, remember her ult breaks your ult. Just stay calm.
3/10 Easy, you can easly win from him, dodge his Q then use your combo he won't have time enough to react and take a yellow card. You will win this easily.
2/10 Veigar is more of a end-game steroid. Just dodge his bind (
out of it) and you will easily outharras and even outburst him easily. Don't let him farm so he gets useless late game. A pretty easy lane, if he does get farmed up make sure to get some Magic Resist so he doesn't one-shot you late game.
4/10 Don't get stunned by his slow/stun and you will win from this guy, also
away from his slow/stun and from his ult and you will win.
3/10 Dodge his skillshots and you win from this little guy, make sure he wasted his stun before you jump to him. You can outfarm and win from this little guy.
6/10 He is a annoying little grrrr... He outranges you easly with his poke, and when you shunpo to him he can hit his full combo. Play smart on him, and jump to him after he wastes Q+E on farming then this will be a easy win, mind his strong farming and try to deny him.
2/10 Bad Zed is bad, there aren't a lot of good Zed players, and you just outburst him anyway, you don't need a special tactic on him. Just mind his passive when you are low HP.
8/10 Really hard, he counters you a lot, the double bomb out-harasses you, and his ult blocks your ult. You can't kill this guy, just try to farm and be more usefull late game.
4/10 Dodge her bind and she can't combo you, you can even use her plants and seeds to escape because you
to them. Her ult cancels yours.