Alright, so I may not be an expert on Yasuo, or on making guides on Mobafire, however, I believe I have played enough games with this build to confidently say that it does relatively well under most circumstances. Yasuo is both extremely mobile, and can poke and farm at a safe range due to his Steel Tempest, he is also able to trade well with the opposing mid champion due to his flow shield, utilizing this however may take a tad bit of practice.

Disclaimer: This Guide is not finished, I am publishing it so viewers may see it as I continue to work on it and provide any feedback they see fit.

So as I have seen on a lot of different guides, most people prefer the Statik Shiv approach for Yasuo, and while it has good synergy with his Passive and the on-hit effect of his Steel Tempest, I believe that in a trade, a well landed Steel Tempest with Trinity Force can make a larger impact, not only is it low enough cooldown at end build to give you maximum effectiveness on the procs, but it will also scale with the bonus armor pen. that you acquire through Last Breath. and while the minimal critical chance on Trinity Force may not allow you to cap, the critical chance given from Trinity Force, Infinity Edge, and your runes will allow you to reach around 80% crit chance, which is both reliable enough to make a difference, it also doesn't force you to lose any gold value on the wasted critical chance.