Viego vs Jax

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.

Take a short trade, then back off: Relentless Assault (passive) increases his attack speed with each consecutive auto.

During Counter Strike (E), back off instead of attacking: he dodges your autos, then stuns nearby enemies, dealing more damage per dodged auto.

Trade right after Counter Strike (E): it's both his defense and his only stun, and it has a 17 to 9 second cooldown.

In the late game, don't leave his split push unanswered: send someone to hold his lane, or force an objective on the other side of the map.