Riot Spiffy - Many have been asking for a Yasuo build. Here is an interesting one that focuses on movement speed, great when comboed with items like Phantom Dancer and Black Cleaver.
LoL Guide Yasuo, Top, S10 - Millenium
Yasuo Build - Highest Win Rate Builds, Runes, and Items
Deadly Yasuo Runes - New 2018 Runes - League of Legends - YouTube