Vi vs Naafiri

Hit an enemy with a spell to activate Blast Shield (passive): it charges over time, and every third hit on a target lowers its cooldown.

Hit the same target three times: Denting Blows (W) adds damage based on their max health, removes some of their armor and gives you attack speed.

Cast Relentless Force (E) on a minion in front of your opponent: the shockwave also hits enemies behind the target, with full damage.

Charge Vault Breaker (Q) out of sight before you show up: fully charged, it deals double damage, and it stops on the first champion hit to knock them back.

Cast Cease and Desist (R) on their carry: you're unstoppable during the charge, and enemies in your way are stunned. Don't stray too far from your team.

Dodge Darkin Daggers (Q): her pack leaps onto the first champion hit, and the second dagger hits harder if you're already bleeding.

If you have AoE spells, hit her pack too: each packmate killed lowers her damage. Do it before Eviscerate (E) calls them back and heals them.

Save your targeted spells for after The Call of the Pack (W): for a brief moment, she and her pack are untargetable.

Avoid crossing the map alone against her: Hounds' Pursuit (R) lets her dash onto a champion from range, and a takedown lets her recast it.