Briar vs Zyra

Cast Blood Frenzy (W) only when you want to end the fight: you charge the nearest enemy, champions first, without choosing your target.

Save Snack Attack (W) for when you're low: your next auto deals damage based on the target's missing health and heals you for part of it.

Fully charge Chilling Scream (E) near a wall: the scream then knocks enemies back, and those who hit the wall are stunned.

Cast Certain Death (R) across the map to engage or catch a target: you fly to the first champion hit and chase them until they die.

Get out of the line of Grasping Roots (E): the roots pass through minions and root every enemy hit, then her plants hit the trapped target.

Step on her seeds to destroy them before she grows them: Rampant Growth (W) seeds reveal you for a moment, but leave her no plant.

Take down the plants born from Garden of Thorns (passive), or back off until they die: they take fixed damage, like a ward, and don't live long.

Get out of the Stranglethorns (R) zone as soon as it appears: the vines knock you into the air 2 seconds later, and her plants are empowered inside.

If you can engage, go for Zyra when her plants are far from her: the Thorn Spitter from Deadly Spines (Q) only fires at 575 range.