Nimble Movement

Inflicts [Shock] with a 40% chance upon landing the final strike of a basic attack. [Shock]: When hit, has a X% chance to trigger a lightning strike, dealing X% additional damage and reducing Stagger Resistance by 10%. Lasts for 15.0 sec. The chance to trigger a lightning strike increases by X% per stack, and Stagger Resistance is further reduced by 0.1% per stack. This effect stacks up to 99 times.

X is a value the game's data doesn't give.