Senna vs Camille

Attack the souls held by the Mist whenever you can: each soul freed with Absolution (passive) increases your AD, attack range and crit chance.

Fire Piercing Darkness (Q) through an ally or an enemy to hit both: the beam heals your allies, and damages and slows enemies in the line.

Cast Last Embrace (W) on a target that's already slowed or immobilized: after a short delay, they and nearby enemies are rooted.

Cast Curse of the Black Mist (E) to engage or escape with your team: allies who enter it are camouflaged, then fast and unselectable.

Cast Dawning Shadow (R) to save an ally across the map: the beam has unlimited range and shields allies.

Take a trade after her Hookshot (E): it's her only dash before level 6, on a 16 to 12 second cooldown.

When she latches onto a wall with Hookshot (E), step out of her line: she has 1 second to leap, and the landing stuns nearby champions.

Back off after the first Precision Protocol (Q) attack: if the second comes after a short delay, it hits harder and part of it ignores your armor.

Save your spells to fight inside The Hextech Ultimatum (R) rather than to flee: the trapped target can't leave the zone while it lasts.