The jhin buffs proved nice. And building him
Not only he reached to a decent 49 to 50% winrate he can now actually contributes in breaking towers and his synergy with deathfires is unique. I'm quite happy that riot made a good buff that is purely "QoL" and managed to haul him up balanced.
For builds, Sadly I see a lot of Jhin players doing it still wrong. Firstly you need Arpen runes to prepare when your attack bonus kicks in. If you don't do that, you won't be dealing damage much on your skills which has really good damage. Actually, building a yoomu's is really efficient on him (actually higher than IE) not only costwise but statswise, with 20 arpen and 10% boost on your ad through the active and a ms boost.
And yeah...don't forget. BUYING A MS CRIT ITEM WITHOUT SUFFICIENT AD MAKES A ANTI-POWERSPIKE. Just build Yoomus and IE first, these OP items will be the bedrock for the boost. You won't be dealing dps so why bother buying as early?
Next, get deathfires. Your keystone will be doing like 150+ damage with your skills and will execute enemies even if they manage to survive your ult with low health. It also makes your W a decent poke tool as well.