Love watching your videos! I got Dragon Tooth on Yasuo and with "set all units health to 1", he cleared those Throne Guards and Lissandra quickly, also his stats grew up a lot since he's a Dragon so he could survive the Ice Shards too
I stick Voidborn Carapace on Yasuo, and it pays off. The best part is that since the once a round stun completely bypasses spellshield, if the enemy has it, there's a real good chance he'll get it, in addition to all of the other keywords. Although my Yasuo Lissa run gave me the stun power from the get go so I was double stunning every round, so that just stalled out the enemy real easily.
I like to run full build instead of the crown guard. It just makes my yasuo very good as a unit, and I don't think yas needs rally after a board wipe since whatever comes next usually gets ded immediately on round start
the default options are bard and pyke, since bard creates more chimes per round and pyke benefits from more lurk units in deck and more deaths from below generated. but its still useful with champions with champions with great spells that can be easily used by its deck (asol, diana, yasuo). and its still good if you just want to massively increase the chances of drawing your champion
Nami is pretty good with it as well, I've personally used it with her and Master Yi, also I've tried it on Norra, since all the other copies of her benefit from her star powers and level up
I use Echoing Spirit, Tempest Blade, and Everfrost or Banshee's Veil on Yasuo. I feel the deck is too champion reliant to not take extra copies of Yasuo.
I've run a yasuo vs liss path today... I lost to round end: deal 2 to all units decking me out... I had round end kill all enemies and just visited the mind melt 🫠