Yasuo vs Smolder

Hit twice with Steel Tempest (Q), on minions if needed, to charge the whirlwind. Cast it during Sweeping Blade (E): the strike becomes a circle.

Keep moving before taking a trade: Way of the Wanderer (passive) builds your shield while you move, and it triggers on the first hit you take.

Chain Sweeping Blade (E) on different targets to reposition or dodge: each target has its own cooldown, so the spell comes back almost instantly.

Save Wind Wall (W) for a projectile that decides the teamfight, like Jinx's ult, rather than for poke: it blocks for 4 seconds, on a 25 to 17 second cooldown.

Watch for your allies' knock-ups: Last Breath (R) can be cast on any airborne champion, whether the knock-up comes from your whirlwind or Malphite's ult.

Take your trades early: his basic spells only gain damage with the Dragon Practice (passive) stacks he builds over the game.

If you have hard CC, save it for Flap, Flap, Flap (E): it's his only way to escape, and hard CC interrupts his flight.

Don't stay grouped with your allies against him: empowered, Super Scorcher Breath (Q) also damages around its target and behind it.

Get out of the center of MMOOOMMMM! (R): that's where the breath hits hardest and slows.