Yunara vs Yasuo

Hit with Arc of Judgment (W) before a trade: the prayer bead slows your target, then damages them every second, and it reaches 1150, well beyond your autos.

Measure your power by your crit items: with Vow of the First Lands (passive), each of your critical strikes deals bonus magic damage.

Once your autos have charged Cultivation of Spirit (Q), activate it for a trade or a teamfight: you gain attack speed, and your autos spread to nearby enemies.

Cast Transcend One's Self (R) as the teamfight starts: your basic spells are upgraded, Arc of Ruin (W) fires a laser, and Untouchable Shadow (E) gives you a dash.

Hit him with a cheap attack to trigger the Way of the Wanderer (passive) shield, then start the real trade: otherwise, it absorbs your best damage.

If you have projectiles, save them for after Wind Wall (W): it blocks them all for 4 seconds, on a 25 to 17 second cooldown. Other spells go through it.

Don't stand right behind your minions: each one gives him a target for Sweeping Blade (E), and he gets closer to you with every dash.

Get out of the line of his whirlwind, the third Steel Tempest (Q): without a knock-up, he can't cast Last Breath (R).

Judge his threat by his crit items more than his level: Way of the Wanderer (passive) raises his critical strike chance, so each crit item does more for him.