Viego vs Xin Zhao

Weave in an auto after each spell: thanks to Blade of the Ruined King (Q), your first attack on an enemy damaged by an ability strikes twice and heals you.

Charge Spectral Maw (W) when you have time: the longer the charge, the longer the first enemy hit stays stunned, but you're slowed in the meantime.

Cast Harrowed Path (E) on a wall near your target: inside the Mist, you're camouflaged and gain move speed and attack speed.

After a kill, hit the wraith to trigger Sovereign's Domination (passive): you restore health and take their basic spells and items, but not their ult.

Cast Heartbreaker (R) to finish: you leave the possessed body and strike the champion with the lowest health percentage, with damage based on their missing health.

Get out of the line of the Wind Becomes Lightning (W) thrust: it slows you and marks you as Challenged, which extends the range of Audacious Charge (E) on you.

If you have CC, use it during Three Talon Strike (Q): without his three autos, there's no knock-up, and his other cooldowns don't go down.

After Audacious Charge (E), keep your distance: it's his only dash to get back on you, and without it he has to walk up to you.

After Crescent Guard (R), don't hit him from range: for a moment, he ignores damage from outside the swept zone. Back off, or hit him from inside it.

If you survive his first minutes, play for time: Xin Zhao is strongest early on, through his ganks and skirmishes.