PAbsolution
Senna can attack souls that spawn from dead enemies to absorb their Mist. She can also siphon Mist from enemy champions she hits with Attacks or Abilities twice, dealing an additional 1（Lv1–10: 1–10 / Lv11–20: 10）% current Health physical damage.
Each stack of Mist grants 0.75 Attack Damage. Every 20 stacks grant 20 Attack Range and 10% Critical Strike Chance but she only has (1 × Critical strike damage (%))% Critical Strike Damage. 35% of excess Critical Strike Chance is converted into Lifesteal.
Senna's Attacks take extra time to fire, deal an additional 20% Attack damage physical damage, and briefly grant her 10%（(Lv1–5: 10 / Lv6–8: 15 / Lv9–20: 20)%） of the target's Move Speed.
Senna can only siphon Mist from an individual champion once every 6（Lv1–5: 6 / Lv6–10: 5 / Lv11–20: 4） seconds. Souls are less likely to spawn from minions Senna kills. Souls always spawn from large minions Senna doesn't kill, champions, and large jungle monsters. Senna does not gain Attack Damage on level up.