Kayn vs Taliyah

Take Rhaast against a tanky team, Shadow Assassin against squishy targets: The Darkin Scythe (passive) gives one healing, the other bonus damage at the start of fights.

Gank through walls with Shadow Step (E): you move through terrain faster, and you heal when you first enter it.

To dodge a burst, cast Umbral Trespass (R) on a champion you just hit: inside, you're untargetable while your spells come back up.

As Rhaast, hit as many champions as you can with your spells: The Darkin Scythe (passive) heals you for part of the ability damage they take.

When Unraveled Earth (E) is on the ground, don't cross it with a dash or get thrown through it by Seismic Shove (W): the stones explode under you and stun you.

If you can engage, go in after Seismic Shove (W): without it, she has nothing left to push you back, and no dash to escape.

If you have CC, save it for Taliyah while she surfs on Weaver's Wall (R): once immobilized, she stops surfing immediately.