Lee Sin vs Lillia

For the Insec, land Sonic Wave (Q), reach the target, ward behind them and jump to it with Safeguard (W): Dragon's Rage (R) kicks them toward your team.

Wait until your target has lost health before casting Resonating Strike (Q): its damage scales with missing health, and you have 3 seconds to cast it.

Cast Safeguard (W) on an ally, minions included, or on a ward to dodge or escape: it has a 7-second cooldown and also shields the targeted allied champion.

Look for invades, ganks and objectives early on: Lee Sin is strongest early, and his impact drops once the others have their items.

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.