Aphelios vs Zeri

With Gravitum as your main weapon, hit your target to slow them, then cast Weapon Abilities (Q): the cannon roots every enemy it has slowed.

Switch to the right weapon with Phase (W) before Moonlight Vigil (R): you then attack each champion hit with your main weapon, and its effect applies.

Before an objective, check Weapon Queue System (E): it shows the weapon Alune will give you next, and an empty weapon goes to the back of the queue.

Keep minions between you and her: Burst Fire (Q) stops on the first enemy hit, except during Spark Surge (E), when it pierces through them.

Don't fight near a wall against her: if Ultrashock Laser (W) hits it, it becomes an area laser that slows and critically strikes.

If you can engage, go in right after Spark Surge (E): it's her only dash, and each of her hits lowers its cooldown, so don't wait.

During Lightning Crash (R), back off out of her range: each hit she lands on a champion extends the effect and makes her faster.