Yorick vs Tryndamere

Hit a champion or last-hit a minion with Last Rites (Q) to dig a grave: with three graves nearby, recast the spell to raise Mist Walkers from them.

Hit your target with Mourning Mist (E): your nearby graves keep raising Mist Walkers, the target loses armor, and your units rush toward them.

Trap your target in Dark Procession (W): the wall blocks enemies but not your allies, and your Mist Walkers hit them in the meantime.

After 10 seconds, recast Eulogy of the Isles (R) to send the Maiden of the Mist to push the nearest lane, but you lose a big part of your power.

Avoid taking a trade when his Fury is high: with Battle Fury (passive), it raises his critical strike chance, and Bloodlust (Q) turns it into healing.

Hit him when he walks up to minions to farm: each last hit gives him Fury, which Bloodlust (Q) then turns into healing.

Against Mocking Shout (W), back off sideways rather than turning your back on him: the spell only slows enemies who are facing away from him.

Once he hits level 6, plan for what comes after Undying Rage (R): he can't die during the effect, so back off or hold any CC you have, and finish him when it ends.