“She can actually do a lot of damage early game with auto/q harass, you'll actually be on the back foot until about level 7. Try not to stand near the ball.”
“Keep your eyes on the ball, she relies on people not paying attention to it to deal damage way more than you think. While still dangerous in the late-game, she's generally not nearly as powerful without her ulti, so try to make your move if she misses it or wastes it.”
“Try and avoid using your burst combo's on her whilst she has her E up, as she will then be able to Q.W and constantly beat you down with auto's. When you each hit level 6, try to force her to use her ultimate whilst you have W'ed in to her, this means you can instantly W back out when she uses it meaning an easy kill for you. Hitting your chains is pretty crucial at this point too, just to make sure you get some damage off onto her whilst trying to bait her ult.”
“At level 1 I'll E-AA. After that, my Q-AA-E-AA-E/Q-E-AA-E-AA deals more damage than her Q-W-AA-AA and my shield is stronger, but it's harder for Lux to hit a Q than it is for Orianna - if I miss it, she'll zone me further away from the minions. She'll most likely keep her ball up in the lane to zone and this opens her up for E poke since she can't shield herself immediately. Later on she has enough damage and cooldowns to kill Lux and Lux can't kill her, so staying out of her Q range is the way to go. Also it's very important to ALWAYS keep track of her ball during teamfights.”
“Her spammable shields and long range poke makes it very difficult to outrade. There is a chance you will be able to all in but that is prior on how the laning phase went and if you aren't behind in gold/cs pre level 6. If she goes seekers/tabis rush likely won't be able to do anything to her.”
“Fleet foot + resolve + doran's shield start should be enough to let you survive the early stages against her aggressive laning phase.
Her Q deals less damage when passing through targets so stay behind minions when trading. You can start trading back once you have level 3 but until that play it as passive as possible and make sure you don't get poked too much.
“Start Doran + 2 Pots if 1) You think you can outplay her and hit your W's to generate a kill at levels 3-5 or 2) You think she will burst you down post 6 (get an extra ring).
Start Corrupting if you think you will not hit your W's (or you will get poked down) and you rely more on wave clear/spammy poke (you will be way more squisher but more durable -- this is recommended if you are sure you will not get hit by CC spells and instantly die).
Can be a difficult matchup if the Orianna is really good. Look where the ball is and how long it takes for the ball to reach you and play accordingly. A good Orianna will play probably super aggressive while a not so good one will play passively and just farm up. Careful for her ult/flash ult as that can setup real easy ganks for their jungler. Careful on Q/E/W because her W movement speed can help her escape/dodge. Don't get poked down by autos and do smart trade proccing your rune as often as you can. Play with Ignite if you want to try to go for the kill or Heal if you feel you are going to get a bit overwhelmed. Heal also helps with ult-dodging because it gives you the movement speed that is necessary to get out of it (if you are quick enough).
As always: Roam!
In teamfights if you engage first and jump on top of her she will have a hard time adjusting her ult to hit 3-4 team members (which she WILL want every teamfight) -- Don't forget Zhonya's for these kind of engages!
Biscuits might also be useful.”
“A very hard matchup in higher elos, because if the ridiculous amount of pressure she can place on you every level before level 6. Her zoning is insane if performed correctly, meaning you might have major problems getting minions in the early game. The way you win this matchup is by ulting only after she used her shield, and also doing a RWR to dodge her ultimate.
“Runa Recomendada: Conquistador.
Uma boa Orianna pokeará sempre com Q e puxará muito a lane para que ela não dê roaming. O combo ideal é sempre EW+AA+QE após ela gastar o Q ou QW caso ela tenha pensado que te acertou. Não tenha pressa em gastar sua ultimate, mas não demore muito para usar, visto que as habilidades da Orianna voltam mais rápido que da Katarina, quanto menos tempo de reação você der para ela, mais efetivo serão seus combos e mais dano você causará. Abuse dos AA visto que a defesa da Orianna é muito baixa. Se você não conseguir matar ela no 1x1, farme o quanto puder e ganke, mesmo que ela continue na lane, ainda assim é possível vencer a rota ao retornar, mas só se você conseguir kills. Cuidado com o Flash Ult da Orianna pois sempre é uma surpresa. Em teamfights esteja ciente de que ela vai tentar te parar com a ultimate para que você não seja efetivo e não consiga resets, portanto, acompanhe a posição da bola, pois caso ela tenha gastado o Q, ficará mais difícil posicionar a ultimate dela contra Katarina. Katarina tem potencial de comeback, caso seja solado ou gankado muitas vezes, fique farmando e dando roaming que você volta no jogo mesmo assim. O potencial de perigo de Orianna é de igual para igual visto que a Orianna consegue matar a Katarina e negar seu dano, e nas lutas em equipe Orianna poderá combar a Katarina à distância, e ou se bem posicionada, poderá interromper seus combos e te matar.”
“Tricky match up since she has long range and a shield to protect her from your burst. I'd recommend asking for ganks with this match up.”