Currently Jhin has no keystone that fits him.
With deathfire and warlords out of the picture, Jhin currently stands at a 47 percent winrate. The problem is that the keystones in precision requires you to hit the target constantly, domination is for burst champs. Sorcery on the other hand has its own problems. Aery is strong on almost any champ and will be nerfed, comet is very unreliable.
Just hoping that they will change or add keystones. I am feeling left behind.