Morgana vs Nami

Look for Dark Binding (Q) early on: the first enemy hit is rooted, giving your carry time to catch them.

Place Tormented Shadow (W) under the target of Dark Binding (Q): rooted, they take the whole zone, whose damage grows with their missing health.

Cast Black Shield (E) on an ally right before CC hits them: while it holds, it blocks disabling and immobilizing CC and absorbs magic damage.

After Soul Shackles (R), stay in range of the chained enemies: those who haven't broken their chain by the end are damaged and stunned.

Change direction when she casts Aqua Prison (Q), then step up if she misses: it's her only stun outside her ult, on a 12 to 8 second cooldown.

Avoid trading when she casts Tidecaller's Blessing (E) on her ally: their next autos and abilities slow you and deal more damage.

Step out to the side of Tidal Wave (R): it travels a long way but moves slowly, and its slow lasts longer the more distance it has covered.

If you can engage, target Nami when she steps up: with no dash or leap, she can only walk away.