Strike of the Enduring

"You strike an opponent, backed with the strength of the earth."
 * I :	Your attack deals 4 additional damage. (Ki cost: 5)
 * II :	Your attack deals 8 additional damage. (Ki cost: 6)
 * III :	Your attack deals 12 additional damage, and 2d6 acid damage on critical hits. (Ki cost: 7)
 * IV : 	Your attack deals 16 additional damage, and 2d10 acid damage on critical hits. (Ki cost: 8)

This ability has a cooldown of approximately 3 seconds. Each level requires the corresponding level in the Way of Earth enhancement line.