Viktor vs Naafiri

Poke with Hextech Ray (E), fired in the direction you choose: it hits every enemy in its line, and its upgrade adds an aftershock in its wake.

After Siphon Power (Q), land an auto within 4 seconds: it deals bonus magic damage, and the spell's shield covers you during the trade.

Place Gravity Field (W) in your target's path, then fire Hextech Ray (E): the field slows them, and if they stay in it for 1.25 seconds, they're stunned.

Glorious Evolution (passive) upgrades a spell every 100 Hex Fragments: Hextech Ray (E) to poke and clear, Siphon Power (Q) to survive, Gravity Field (W) to slow.

Place Arcane Storm (R) on grouped enemies: it follows the champions it just damaged on its own, and you can recast it to move it.

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.