For some reason Riot always seems to overnerf or overbuff champions making them either OP, or not worth it anymore.
Same happend now with Shen.
Q - Twilight Assault
BASE DAMAGE BONUS 15/20/25/30/35/40 (at levels 1/4/7/10/13/16)
⇒ 5/10/15/20/25/30 (at levels 1/4/7/10/13/16)
Shen has 1 way to trade and its an all in aswell.
You taunt, you press Q, you could see it comming quite easily and he often has to use his Q early on to farm, making it not be up ''all the time''
It's his 1 and only trading tool.
Hes easily pushed, and has little to no waveclear.
Besides that Shen isnt that hard to counter, you can pick Jayce, Yorick, Teemo, Vlad, Heimer, and many others.
It is not easy to win a lane as Shen and his kill potential is low.. he works well with ganks though because of his taunt.
He doesnt have much lifesteal either, nore sustain. the 1 thing he can rely on is Teleport.
The Q nerfs are huge.. we are not talking of a damage reduction of 10% or anything.. no, its 66% on level 1.. and still 50% on level 4..
And it doesnt get much better from there on either.
Not sure how you are supposed to win lane now, even surviving will be a lot harder, and honestly, i dont think he will be worth it anymore.
There are more reliable, more harrasable and sustainable top lane tanks that also have a great team impact, Ornn, Cho, Maokai to just name a few.
Often you already had to build Hydra to push lanes or split, not taking it now will make his damage/kill threat even lower.