Because when she can easily poke you down to death while effectively zone you from farming without crossing half her mana bar, something's not ok, if that champion does not fall off AND has a shield that prevents you from trading.
KirotheImmortal5 votesDude she already has expensive spells. With low mana pool. This would kill her.
ZapMyHeart5 votesOrianna's mana costs for her combo is high. If she lands both Q+W, she burns a lot of mana, given that her mana pool is small. At level 5, she can only do Q+W ~3 times. At level 10, she could only do it ~5 times. This leaves no mana for her E or to reposition with her Q, by the way. At early game, her shield is going to be weak and nothing to cry about. Q poke doesn't do much if you line yourself between minions to reduce the damage or spend 450g to get yourself some MR. If you're going to complain about mana costs, complain about Lost Chapter instead.
Ironic that you're complaining about Orianna's poke damage, considering you're playing one of the biggest lane bully in bot lane with pretty much zero mana costs. Can you make a nerf thread about Zyra as well?
An Undead brat2 votesHer AAs do bonus damage, too. You absolutely ignore champions have mana regen and with her passive you can't really miss CS, so DR refunds you alot of mana. Every shield helps in early, when the enemy has none. And you just don't need to use W, your Q at level 5 has 40 mana cost, you can Q 8 times on level 5 - mana regen not counted.
Orianna's mana costs for her combo is high.
Great, let's increase Q mana cost and decrease the cost for combo, sounds balanced, right?
Ironic that you're complaining about Orianna's poke damage, considering you're playing one of the biggest lane bully in bot lane with pretty much zero mana costs. Can you make a nerf thread about Zyra as well?
Irrelevant argument.
But if you insist: I play her mid, not bot. Yes, she is a lane bully, but hitting her spells is way harder than Ori's and she has way less survivability (no shield nor MVS buff, her spells force for to root herself when she wants to cast them.
ZapMyHeart4 votes[{quoted}](name=Sexy Bisex Plant,realm=EUNE,application-id=3ErqAdtq,discussion-id=wNWQ3jIa,comment-id=00070000,timestamp=2017-07-02T14:31:05.507+0000)
Her AAs do bonus damage, too. You absolutely ignore champions have mana regen and with her passive you can't really miss CS, so DR refunds you alot of mana. Every shield helps in early, when the enemy has none. And you just don't need to use W, your Q at level 5 has 40 mana cost, you can Q 8 times on level 5 - mana regen not counted.
Great, let's increase Q mana cost and decrease the cost for combo, sounds balanced, right?
Irrelevant argument.
But if you insist: I play her mid, not bot. Yes, she is a lane bully, but hitting her spells is way harder than Ori's and she has way less survivability (no shield nor MVS buff, her spells force for to root herself when she wants to cast them.
K. If you are dumb enough to try and exchange AA with an Ori, you deserve to eat the damage. Just like if you were to try and do that to a Ziggs or an ADC for the matter.
DR also refunds mana to your mid laner as well. And your mid laner has passive mana regen on top of that. So that's moot. Nerf DR or Lost Chapter if it's such a problem. Early shield doesn't help much, considering that other mids have higher damage. Keep in mind, if she's using her shield, she is burning mana.
8 times is not a lot. Your Zyra also can throw her Q 8 times as well at level 5. With more damage on top of that. That's not including her free plants for damage as well.
If you want to increase her Q's mana cost, her W, E, and R mana cost would need to go down, considering the repositioning factor is huge in her kit. And that causes a lot more problems than just the Q poke.
Zyra is relevant to this, considering you are arguing about Orianna's poke, yet you are playing one of the most aggressive poke mages with just as low mana cost as Ori. Zyra is easy mode in both mid and bot lane. I've played her since her release and it's not hard to hit anything with her spells. Just throw it out within the area and her plants are summoned. Her survivability is her hard CC and her huge zoning. No one zones as hard as Zyra. At least with Ori, you know you just need to stay 825 range away, with the ball as the indicator. Zyra can drop 2 seeds near-instantly, as well as multiple seeds randomly spawning around her, creating an unhealthy laning phase. Considering Ori doesn't have anything except is a decaying slow in her W (unless you count her high cooldown R) for CC.
Again, 
negates any poke Ori dishes out with either her AA or her Q. Not that hard.
An Undead brat1 votesIf you are dumb enough to try and exchange AA with an Ori, you deserve to eat the damage.
Because she's melee so it's easy to just stay away from her - oh wait, here we are, the zoning.
I'm not continuing in the rest of that conversation because it's absolute OoT, waste of my time and you are absolutely biased.
ZapMyHeart2 votes[{quoted}](name=Sexy Bisex Plant,realm=EUNE,application-id=3ErqAdtq,discussion-id=wNWQ3jIa,comment-id=0007000000000000,timestamp=2017-07-02T19:29:04.727+0000)
Because she's melee so it's easy to just stay away from her - oh wait, here we are, the zoning.
I'm not continuing in the rest of that conversation because it's absolute OoT, waste of my time and you are absolutely biased.
Considering you play Zyra, clearly you should know a thing or two about zoning. Then again, who knows.
Do tell why am I biased? My highest mastery champion is Zyra and even I think she's broken with her zoning plants. It's just clear to us that you don't know what you're talking about because I gave out facts and yet you can't even refute any of them.
You are just bitter because you don't know how to play around Ori's style and you don't even know how to buy a simple 450g item to counter her.
Big Lincoln3 votesall mages do this lol
An Undead brat1 votesNo.
Naono3 votesI usually try to accumilate 900gold so I can get 
on first back. That take care of mana issues. And if there's no need to rush other items, I get 
. And depends on who is your jg could always asked for blue buff.
And if they nerf her manacost her dmg is going get nerf too, I honestly don't want that because then she just fall into strictly support or somewhat useless like good bit of champs.
An Undead brat1 votesThe thing is she doesn't even need Lost chapter, what I was talking about was ~3rd level.
SenzaRespiro893 votesNo orianna is fine and absolutely balanced. The perfect balance champ according to boards. i mean caps recently said syndra ori need changes, they have been too strong for too long but according to other certain boards members the best players have no idea what they are talking about.
Revali3 votesorianna player located.
King of Demons2 votesShe's always been a lane bully. People always end up crying about those the most because they get manhandled the first 20 min of the game
An Undead brat1 votesThere is a certain line where a champion does their job just too good (fe. 
was nerfed for that).
Danjeng2 votesIf I remember correctly, Orianna's mana cost was lowered for one of her abilities (I think Q), even though she wasn't doing poorly at all. Then next thing you know, Faker and all the pro midlaners are choosing Orianna.
Edit: Her ultimate's mana cost was lowered too, along with cool down.
ActivatingEMP2 votesAs Talon, at least I have to pay for my extreme early game pressure by having a poor late game and insane mana costs- orrianna doesn't have either of those.
Rey Honchkrow1 votesNothing that Morello wouldn't fix tbh xD
Shadòw1 votesthey basically just need to finally revert the mana cost buff to her Q.
i mean, she can just zone and poke too well on lane for the amount of late game power she brings. i'm just beginning to hate this champion after they made her cost 0 mana on lane.
warpenguin5551 votesAlso her ult needs a higher CD. It's like Yasuo ult levels of always up
DoktorKaiser1 votesYeah I was thinking the same thing, her mana cost buffs are a bit too much. And then I got rekt by Lee or Shaco or J4 or 1 shot by Draven and Cait crit and I remember why Ori is perfectly balanced and has a ton of counterplay. There are bigger problems in the game right now than Ori spamming a bit too much early game.