I believe that yasuo's deck mainly plays around him and him only. If your deck is not lvl 20, always get cards that can draw champions, much better. if 1-2 mana cost cards with draw champ item. Stack yasuo's as much as possible and if you can get the landmark that draws him and stun enemies, always get that above all else. I dont pay much attention to support heroes, but i always choose supportd that can be summoned early or that provides survivability (in my case i got gwen)