Keystone On Yasuo

I used to be a hardcore Yasuo main. With around 170k points currently, I played a lot of him, and tried a lot of different stuff. (Support Yasuo is NOT a good idea)

When I first started out, Thunderlord's was the most powerful keystone, so i chose it for my mastery page for him. I also take Grasp of the Undying if I'm in a bad matchup or if I'm going to go tank that game. But recently, I've been seeing a lot of Yasuos taking Fervor of Battle.

This isn't bad. It should be good. However, I still think Thunderlord's is the best choice due to it giving a champion that already has enough consistent damage a bit of burst to go along with it. I could just be stupid, but it works for me.

So anyway, what keystone do you Yasuo players use nowadays? Is it always Fervor or am I not as insane as I think I am? Let me know, I'm confused!

Sincerely,