Bard vs Nami

Line up Cosmic Binding (Q) with a wall or a second enemy behind your target: the missile then stuns every enemy hit.

Cast Tempered Fate (R) to freeze a teamfight, or a tower during a dive: everything hit, allies included, goes into stasis.

Open Magical Journey (E) to roam or to get your team out: the portal crosses nearby terrain, but enemies can use it too.

Collect the Traveler's Call (passive) Chimes whenever your lane allows: they give XP and mana, and enough Chimes add area damage and a slow to your Meeps.

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.