I just encountered the most overpowered ability in the game. It's very unbalanced.
I was autofilled into marksman role.
We were
vs
At level 6, Thresh flashed in and scoop us then ult'd and threw a lantern to Yasuo.
Nami and I both ult'd.
In response, Yasuo used "wind wall"
It blocked both ultimates.
It blocked my Q, E and basic attacks.
It also blocked Nami's Q and W.
It blocked 2 ults and 4 abilities! [sg-janna]