I completely agree that CDR glyphs would be beneficial and will most definitely be adding them as a second choice. I went with the magic resist mainly to combat against champion abilities for the early laning phase.

As for the Frozen Mallet and Second bloodthirster, it's definitely a good item to have because her lifesteal will be ridiculous, but I feel that losing 700 health would be less optimal. However, I will definitely try out your suggestion and add it to the guide if it works out well.

And finally, I agree with your opinion on Ki Burst. At first I was just leveling my abilities according to the game, but I will soon be adding in a solid skill sequence.

Thanks for the feedback!

Overall I really like the build. I disagree a little bit on the rune choice but that is partially game dependent. Since Riven is cooldown dependent I like to have flat CD reduciton instead of the magic resist. And although I don't think Frozen Mallet is a bad choice, I do think that it's less optimal than maybe a second Blood Thirster. Game depending on the amount of cc, I will sometimes choose Boots of Swiftness in place of Mercury Treads and get tenacity from a different item since the patch has raised them all to an equal 35. But really that's just situational. I would like to see some further detail in your own experience with this build but I would probably up vote this.

Edit: After a little more test time, I think Ki Burst will be far more beneficial to max a bit sooner since it's CD lowers with each lvl and Broken Wings does not. It makes farming and champ slaying a bit easier. Just a thought. I still like the guide though.

Reserving first comment. Please test this build out and let me know what you think. Be brutal! I am very open to feedback and will consider all suggestions. Grammar nazis are welcomed. ;)