Well since i didn't see too many builds for riven i decided to make my own... T find off tank is the best considering that your a melee fighter then tends to get focused allot. Enjoy!!

The overall set for the runes is for being a more effective "harasser". The attack damage runes are for the fact that you don't do enough damage in the first few levels, so combined with a Doran's Blade it works quite well early level. The armor penetration runes are so you can handle the tanks later on without having to buy a black cleaver or a last whisperer. The attack speed runes are work amazingly with your passive. Now the glyph's can either be attack speed or magic resist, it just depends how well you can take hits from AP casters.

Masteries can either be 15 14 1 or 15 0 15, its all personal preference.

Getting a Doran's Blade first really helps early game, worked in with the runes you can harass and harass and keep taking damage without having to go back often. And stacking health like a mad man helps allot considering your constantly up close taking heavy damage, add a Atma's
Impaler and your set. I usually go Doran's Blade, Boots of Speed, Phage, Boots of Swiftness, Vampire Scepter, Frozen Mallet, Atma's Impaler, Warmogs, Zeal, The Bloodthirster, Phantom Dancer.

Get your Q as much as possible then go either way depending if your getting hit a bunch.

Ghost and Flash work amazingly for getting away or chasing people down, I just really don't like using Ignite or Exhaust because of how unfair the advantage is. Ghost should prove just as useful as Exhaust.

Early game you want to harass beyond anything if possible, what I do is Q into the enemy finishing the 3 subsequent cast's, then W to stun them, and E to get away. When your ready to finish one off Ulty then, Q in to battle then follow with E to stun then standard attack for about one-two attacks and then finish the rest of your Q or use your E to chase then finish your Q, then if not dead use your ulty to finish them off. Using Your ulty on a tank even with a little health missing will do the maximum damage, so use it to your advantage.