What are Ori's weaknesses?

She has none. Just dodge if they pick her and if you're playing blind pick then just leave in the loading screen and let your team remake.

Ori main gonna tell you how to kill ori

1. Jump on her Like all mages, gap closers are tough on her. She can't pull you off in any meaningful way and will struggle to respond, especially if she just used q. That said, respect her autos. Don't dive her if she is carrying the ball and her ult is up. Many a good zed and Yasuo die that way getting yanked back under tower to take an extra turret shot and ignite.

2. Use range. Orianna is a mid range mage. She does the most damage keeping you at an arm's length. She needs to set up fights by setting her q on the side often times, so bypassing that whole nonsense by picking Xerath or velkoz lets you avoid fight altogether. Be careful, orianna will be finding chances to get closer to those kinda of mages between cooldowns to get off a combo.

3. Be fast. Anyone with a small dash or juke that can side step the ball avoids 90% of her damage. Remember, ALL of her damaging spells come from the ball so if you can dodge 1 q and get in a few hits you got a free trade and forced her to use the shield.

flash the ult.

If her ball isnt near her, she is very vulnerable. As an assassin take advantage of her semi long cds and get in her face. As a mage, play someone with more range to harass

She's immobile. Her only hard cc is her ult. She is squishy. Her spells are rather slow.

Her biggest weakness is Movement speed. Truthfully, if you can in advance take MS runes and masteries, build boots of swiftness and or Ludens Echo if AP. You can easily dodge her ball this way as the ball does travel quite slow when moving farther distances, this way you can also EASILY walk out of her ult. As long as you can predict when she is going to ult you can dodge it, I mean if she is getting close on you and keeps walking to you when you are out of position you can tell she wants to ult you, then if you see her ball come at you just speedily walk out of the way. Keep mouse close to your champion so you can quickly direct where to move. If In draft pick and the enemy midlaner chooses Orianna, I would not go with anyone that doesn't have good movement speed or any gap closing abilities ie: Syndra, Morgana, Lux, or Cassiopeia, I personally pick Ahri because when she goes all in I use my R to go in on her, because for Orianna to go in she has to literally put herself in a super vulnerable position by casting her Ball away from her losing the passive resistances and now she has for travel time to shield herself or speed herself up, so when she Q's and is gonna R W explode you just ult towards her quickly using two charges of Ahri's R and a quick W-E charm and she's basically dead.

In lane i'm pretty sure a good Orianna can hold 1v1 against any champion with the right summoners. If she takes barrier, and uses her shield on top of that for your all ins she can pretty much turn it around on you. If you play passive, and she has even or superior range, she'll chip away at you. So she basically goes even/doesn't lose or wins lane. Less than ideal match ups would be those with longer range, Xerath, or strong waveclear like Ziggs seeing as Ori is mana hungry before she gets lost chapter. Or people who force her to play a passive lane then outscale her Azir. But her real weakness is Divers. Orianna suxs against people who can gapclose + burst and or have strong dive potential. Dianna, hecrim stuff like that will typical give her a hard time

Pick an artillery mage and rush movement speed,it's not a counter but it's your best chamce

can one-shot her.

Pretty much one shot assassins especially ones with a lot of mobility like Zed. More or less all ining and dodging her ult is her only weakness. Ori has never not been a good pick as far as I remember.

This video is still relevant. https://www.youtube.com/watch?v=D3c5b4w0rC4 Basically the champions listed in the "midlaners to avoid as Orianna" is what you want to play. In case you don't want to look at the video these are the champions mentioned. I'd say they're pretty spot on.

But the main thing you want to consider when playing these champions is your team comp and scaling. Orianna has decent laning and good scaling with no major weaknesses. If you pick an early champion from the list and can't get an advantage she'll win the game. Don't go leblanc and just farm when you can go Xerath poke her and scale just as well as she does. Ahri i still think is the best pick into her, because it's pretty even for most of the game with a slight advantage to Ahri, and pick potential that never really goes away because of charm (zed etc, not enough damage = no kill but charm and someone can follow up.)