First guide. It needs more work!

I've tried many combos. This is one of the best. Using Magic Resist instead of cool down glyphs is the 2nd.

gotta love the normal AD build twisted up a little. The 2 points in dodge have saved me a few times.

I think this build is the best for Riven. At the end its all up to you Guardian Angel or a Phantom Dancer.

Max Ki Burst then Valor. If you have a good support Max Broken Wings then Ki Burst

Exhaust - is needed it will help keep the kills come in.
Flash - is needed to save you in team fights, or to help you get away.

Ignite - i didn't really like ignite it didn't go well with her play style.
Teleport - you can take teleport over exhaust it will be about equal if you know when to teleport in!

Poke using valor ki burst. Use broken wings once after an attack for maximum damage!