Anivia vs Yasuo

Recast Flash Frost (Q) when the orb reaches your target: it explodes at once and stuns, without waiting for the end of its range.

Cast Frostbite (E) right after Flash Frost (Q), or inside a fully formed Glacial Storm (R): against a chilled target, its damage doubles.

Place Crystallize (W) behind a fleeing enemy: the ice wall blocks the path before it melts.

Play more aggressively when Rebirth (passive) is available: instead of dying, you turn into an egg, and if it isn't destroyed, you come back at full health.

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.