Kayn vs Kindred

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 Mounting Dread (E) hits you, move away: Kindred's third auto on you sends Wolf, who strikes based on your missing health.

Leave the Wolf's Frenzy (W) zone: inside, Wolf bites Lamb's target based on their current health, and Dance of Arrows (Q) comes back much faster.

At low health, step into the zone of Lamb's Respite (R): no one dies there, enemies included, and everyone inside is healed at the end.

Contest the monsters Kindred hunts: each successful hunt from Mark of the Kindred (passive) empowers their spells for the rest of the game, and every 4, their range.