Lee Sin Ability (LoL): Tempest / Cripple
Tempest / Cripple Lee Sin
E

Range: 350
/ 500
Cooldown: 8
Cost: 50
/ 25
Cripple: Lee Sin slows nearby enemies struck by the shockwave by 35 / 45 / 55 / 65 / 75% decaying over 4 seconds.
Is there a bug makes tempest hit twice dmg?
There used to be but they fixed it a while ago.