Viktor vs Annie

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.

Back off when Pyromania (passive) is ready: after 4 spells, her next offensive spell stuns you. She has it ready at the start and every time she respawns.

If your range is longer than hers, poke her from outside it: her autos and Disintegrate (Q) reach 625, Incinerate (W) 600.

Once she hits level 6, stay well outside her range when her stun is ready: with Flash, Summon: Tibbers (R) can land on you from much farther away.

Take the teamfight once Tibbers has been cast and is gone, because Summon: Tibbers (R) has a 130 to 100 second cooldown and is her biggest source of damage.