Ahri the most unbalanced.
Sure there are people who can't play her that make her look bad. But when people can play her its incredibly OP. Any game with a good Ahri and 4 half way okay noobs that don't troll is a easy win. Ahri is the carry even with horrible noobs if they don't troll.
A poppy vs Ahri no can do.. Poppy is so tank yet Ahri just plows through your tank likes it nothing at all. A good ahri moves so fast and does so much damage she can cover all 3 lanes. Ahri does not take damage as fast as someone squishy should.. She was 3/4 health for start of our battle I was full health. I did my E landing it smacking her on a wall. My Q during the freeze on wall. 3 auto attacks. My E cancleing her ult. My R smacking her in the sky. Ahri went from 3/4 health to 1/2. Then took me from full health to dead. All while staying infront of me as I tried to get back to the turrent. Why did Poppy's full combo witch I know is very strong because I have won games 28/0 with poppy easy. With her full combo so strong why the heck did I only do 1/4 of Ahri's health? Ahri is so incredibly OP even makes Syndra's damage look weak. Again in the same game that Ahri killed ME as poppy, another player as adc ezreal, and Xin jg. She took all 3 of us solo. Ahri is freaking stupid OP. To have no tank items and no extra health items no increase movement speed items, Yet she is faster and stronger and takes less damage than a tank. WTF GUYS.