All this riven buff ranting and I'm here like....
JAYCE WILL BE TOO STRONGGGGGGGGGGG 
JAYCE WILL BE TOO STRONGGGGGGGGGGG 
:D
He's still gonna have to get close to do his damage which will just = dogpile on Jayce.
Honestly i dont see the buff. Before patch i was dealing 300 magic damage on a creep with his R. After patch im still dealing 300 magic damage on creeps with R lol. Full AD build with 505 attack damage on each game.