Senna

Each stack of Mist grants 1.25 Attack Damage. Every 20 stacks of Mist grant 15 Attack Range and 15% Critical Chance.

Shoots a bolt of piercing shadow through any object, dealing 50 / 90 / 130 / 170 (+60% AD) physical damage to enemies, slowing enemies by 15% (+0.1 AD +0.06 AP) for 0.75 / 1 / 1.25 / 1.5 seconds and restoring 40 / 70 / 100 / 130 (+40% AD +25% AP) Health to ally champions. Attacks reduces Piercing Darkness's cooldown by 1 seconds. This Ability's cast range matches Senna's attack range and its cast time is improved with Attack Speed. It applies on-hit effects to enemy champions.

Sends forth a wave of Black Mist, dealing 90 / 155 / 220 / 285 (+70% AD) physical damage to the first enemy hit. After 1 second delay the target and other nearby enemies are Rooted for 1.3 / 1.6 / 1.9 / 2.2 seconds.

Dissolves into a cloud of mist for a few seconds, becoming a Wraith. Allied champions who enters the mist are Camouflaged and become Wraiths when they leave. Wraiths gain 20% Movement Speed, are Unselectable, and hide their identities as long as no enemy champions are nearby. Camouflaged: These units are hidden from view. They are revealed by nearby enemi champions, turrets, and True Sight.

Fires a global wave that shields ally champions from 120 / 160 / 200 (+40% AP + 4 per Mist) damage for 3 seconds, while dealing 250 / 375 / 500 (+120% AD +50% AP) physical damage and applies Mist to enemy champions caught in the center.