When units die near Senna, their souls are periodically trapped by the Black Mist. Senna can attack these souls to free them, absorbing the Mist that held them in death. Mist fuels her Relic Cannon's power with increased Attack Damage, Attack Range, and Critical Strike Chance.

Attacks from Senna's Relic Cannon take longer to fire, deal bonus damage, and briefly grant her a portion of her target's Move Speed.

Senna shoots a bolt of piercing shadow through an ally or enemy, dealing physical damage to enemies and Slowing them by for second(s). Restores Health to allied champions.

Attacks reduce this Ability's Cooldown by second.

Senna sends forth the Black Mist, dealing physical damage to the first enemy hit. After a second delay the target and other nearby enemies are Rooted for second(s).

Senna dissolves into a cloud of Black Mist for seconds, becoming a Wraith. Allied champions who enter the Mist are Camouflaged and become Wraiths when they leave. Wraiths gain Move Speed, are Unselectable, and hide their identities as long as no enemy champions are nearby.

Senna fires a beam of light that deals physical damage to all enemy champions hit. Allied champions hit in a wider area receive Shield for seconds.