
Passive
Fury of the Xer'Sai
Rek'Sai generates Fury by Attacking and hitting with basic Abilities. She consumes this Fury while Burrowed to restore health.

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Riot Data Dragon 16.20.1. Base values before items, runes and bonuses; independent of match-data filters.
Base-game reference only. Mode-specific balance changes and augments are not included.
Official short descriptions · Data Dragon 16.20.1
Base-game reference only. Item, rune and mode-specific adjustments are not included.
This reference covers the passive and four ability slots. Alternate forms and full damage calculations are not covered.

Passive
Rek'Sai generates Fury by Attacking and hitting with basic Abilities. She consumes this Fury while Burrowed to restore health.

Q
Rek'Sai's next 3 basic attacks deal bonus Physical Damage to nearby enemies. While Burrowed, Rek'Sai launches a burst of void-charged earth that damages and reveals enemies hit.
Base values from ability rank 1 upward.

W
Rek'Sai burrows into the ground, gaining new abilities and increased Move Speed. Her vision range is reduced and she cannot use basic attacks. While Burrowed, Rek'Sai may cast Unburrow to knock up and damage nearby enemies.
Base values from ability rank 1 upward.

E
Rek'Sai bites her target, dealing physical damage, or bonus true damage if she has max Fury. While Burrowed, Rek'Sai creates a re-usable, long lasting tunnel. Enemies can destroy it by standing on top of either entrance.
Base values from ability rank 1 upward.

R
Rek'Sai passively marks targets by damaging them. She can activate this ability to become briefly untargetable and lunge at a marked target for heavy damage based on their maximum health.
Base values from ability rank 1 upward.