Maximum Power-Thrusthttps://irowiki.org/classic/Maximum_Power-Thrust

Maximum Power-Thrust
Type:	Supportive Skill
Levels:	5
SP Cost:	15
Cast Time:	None
Cast Delay:	None
Duration:	180 seconds
Target:	Self
Prerequisites
(Blacksmith) Power-Thrust Lv. 5

Enhance the damage inflicted by the caster's equipped weapon. Maximum Power-Thrust can only be cast on the caster, and cannot affect other characters. While active, this skill adds a 0.1% chance of breaking the equipped weapon each time it is used to attack, with the exception of Axe or Mace-type weapons since these weapons are naturally immune to battle damage.

This skill does not stack with regular Power-Thrust, and will completely override its effects if it is casted.