Gangplank Ability (LoL): Powder Keg
Powder Keg Gangplank
E

Range: 1000
Cooldown: 18
/ 16
/ 14
/ 12
/ 10
Active: Gangplank places a powder keg that can be attacked by himself or his enemies. Lasts 25 seconds or until destroyed.
If Gangplank destroys a keg, it explodes in an AoE blast that slows enemies by 40 / 50 / 60 / 70 / 80 % for 2 seconds and spreads the damage of the attack to all nearby enemies. Other casks within the zone will chain explode. Explosions ignore 40% of their targets' armor, and enemy champions take 80 / 105 / 130 / 155 / 180 bonus physical damage.
If an enemy destroys the cask, it defuses the explosion and grants gold.
It used to ignore 40-60% based on rank