Early game gank and assassination pressure.
Burst damage and target access
Hitting a champion with 3 separate attacks or abilities in 2s deals bonus adaptive damage.
Gain a burst of Lethality and Magic Penetration after using a dash, leap, blink, teleport, or on leaving stealth.
Collect eyeballs for champion and ward takedowns. Gain permanent AD or AP, Adaptive for each eyeball plus bonus upon collection completion.
Unique champion takedowns grant permanent out of combat MS.
9% attack speed, 9 ability power or 5 attack damage
Takedowns restore health and grant bonus gold.
Takedowns on enemies grant permanent Attack Speed.
Rek'Sai is a champion that can quickly and wasily run away with a snowballed early game and the extra burst damage from Electrocute helps you get there with early game kills.
Sudden Impact massively empowers your early game skirmish and gank damage after tunneling with [E] or casting your [R].
Eyeball Collection further empowers your snowball nature letting you run away with your early kills for more damage.
Relentless Hunter is the ultimate jungle Hunter rune as the bonus Movement Speed is pivotal in getting to well-timed ganks and fights on time.
As Rek'Sai you'll often be diving into the enemy backline for damage and Triumph helps you get out alive after getting the assassination.
Rek'Sai heavily relies on Attack Speed for jungle clear and [Q] damage so Alacrity is the go-to rune here for a faster clear.