Bel'Veth vs Lillia

Chain Void Surge (Q) in different directions: each direction has its own cooldown, which drops with your attack speed.

Cast Above and Below (W) when the target can't dodge it: hitting a champion knocks them into the air and refreshes Void Surge (Q) in that direction.

After a kill or an epic monster, eat the Void Coral with Endless Banquet (R): your true form gives you health, range and attack speed.

Take large monsters, large minions and kills: Death in Lavender (passive) gives you permanent attack speed for each one.

Against Blooming Blows (Q), stick to her or back out of range: only the outer edge of the zone adds true damage.

Get out of the center of Watch Out! Eep! (W): the zone deals much more damage there than at the edge.

Dodge her spells, even Swirlseed (E), which rolls to the first enemy: each one marks you for Lilting Lullaby (R), which puts every marked enemy to sleep.

If you have CC, use it on her: with no dash, she relies on the move speed Blooming Blows (Q) gives her for each spell that hits.