Annie vs Yasuo

Last-hit minions with Disintegrate (Q): if the target dies, the spell refunds its mana and its cooldown is halved.

Stack Pyromania (passive) with Molten Shield (E): after 4 spells, your next offensive spell stuns, without you having to step forward.

Cast Summon: Tibbers (R) on a group when Pyromania (passive) is ready, after a Flash if needed: the summon then stuns the enemies hit.

Recast Summon: Tibbers (R) to direct Tibbers: he burns nearby enemies, and each stun you land on a champion makes him enraged and faster.

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.