Aurora vs Gangplank

Poke with Twofold Hex (Q), then recast it once the target has lost health: the hex passes back through them and deals more damage the more health they're missing.

Cast Across the Veil (W) to dodge a skillshot or break a chase: you leap and turn invisible briefly, and a takedown resets its cooldown.

Cast Between Worlds (R) in the middle of grouped enemies: those trying to enter or leave the area are slowed, which keeps them under your team's spells.

Inside Between Worlds (R), teleport from one edge to the other to dodge skillshots and reposition, as long as the area lasts.

Destroy his kegs before he does: a Powder Keg (E) destroyed by an enemy is defused, and each keg loses health over time.

If you can engage, go all-in: his kit has no dash to escape.

If your team has several CCs, don't use them all at once: Remove Scurvy (W) cleanses all his CC, then has a 22 to 14 second cooldown.

In teamfights, get out of his kegs' area: each Powder Keg (E) explosion deals the damage of the attack that set it off, ignores part of your armor and slows you.