Seraphine vs Miss Fortune

Make Surround Sound (W) your third basic spell: Stage Presence (passive) casts it twice, and the second, cast while shielded, heals your allies.

Cast Beat Drop (E) on enemies that are already slowed: they're rooted, and those already immobilized are stunned.

Save High Note (Q) for a wounded target: its damage grows with the health they've lost.

Cast Encore (R) through an ally toward the enemies: each champion hit, allies included, extends the spell's range.

Don't stay behind a low-health minion: if Double Up (Q) kills it, the bounce that hits you always crits.

Hit her regularly, even with a small hit: Strut (W) only grants her passive move speed after a few seconds without taking damage.

If you can engage, get on top of her: Miss Fortune has no dash or leap, only the speed from Strut (W).

If you have CC, save it for Bullet Time (R): she channels in place, and interrupting her cancels the remaining waves.