Oriana is not strong, it just because Rito nerfed almost all mid laners.

nerfed. nerfed. nerfed. nerfed. nerfed. nerfed. Same thing happened with Vayne the opposite way, she was very strong pre-ADC-Rework, but then all other ADCs got buffed and now she stand at a balance place. So mid laners in boards, dont ask for Oriana nerfs, you should ask for mid mage buff, Everytimes you ask for mid nerf, mage become worse and worse, and that why people playing the cancer in mid because all mid laners are nerfed and magic damage doesnt important in the game anymore.