Aurora vs Akali

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.

Take a trade once Twilight Shroud (W) is used: she can't vanish again until its 20 to 16 second cooldown is over.

Play hard before she hits level 6: without Perfect Execution (R), her only spell to get back on you is Shuriken Flip (E), on a 16 to 10 second cooldown.

If you have AoE spells or skillshots, throw them into the Twilight Shroud (W) smoke: they hit her even while she's invisible, whereas targeted spells can't be cast on her.

Take a trade when she has just cast Five Point Strike (Q) several times: each cast costs 110 to 70 energy depending on rank, from a base pool of 200.

Hit her right after the first dash of Perfect Execution (R): she has to wait a moment before she can cast the second.