Crazy how broken Lina is right now

It seems like it's been a while since Valve has had a hero this broken. She dominates middle in the most clownish way possible. You simply spam your Q and sit there and right click nearly any other mid and they have to leave the lane. She's also one of the strongest heroes late game, able to one shot nearly all cores outside of very tanky ones. Can farm like crazy, and is surprisingly tanky. Also runs at nearly max movement speed permanently and has flying mobility? None of this makes any sense