This skill maybe purchased multiple times.
Requires a "weapon skill" as a prerequisite.
This skill allows the character to do 1 extra point of Weapon damage for 10 minutes. Multiple Critical Attacks can be expended simultaneously for enhanced effect, each adding additional damage as described above. It can be used with any Weapon with which your character has the appropriate skill.
You may activate no more than 5 Critical Attacks at any one time. You may voluntarily end the 10-minute duration at any time. You may not activate additional Critical Attacks if they have some already running at the same time (they must end the ongoing ones first).
Critical Attacks need to be traded in to purchase the Weapon Proficiency, Skill at the rate of two Critical Attacks to one Weapon Proficiency, plus one additional Critical Attack per Weapon Proficiency they have already bought. This means that the second Weapon Proficiency requires three Critical Attacks to be traded in, the third Weapon Proficiency will require four Critical Attacks, and so forth.