This skill maybe purchased multiple times.
Requires a "weapon skill" as a prerequisite.
This Skill allows the character to do 2 extra points of weapon damage From Behind, or 1 extra point of weapon damage from any direction with ranged weapons, for 10 minutes. Multiple Back 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.
A player may activate no more than five Back Attacks at any one time. Players may voluntarily end the 10-minute duration at any time. Players may not activate additional Back Attacks if they have some already running at the same time (they must choose to end the ongoing ones first).
Back Attacks are traded in to purchase the Backstab Skill at the rate of two Back Attacks to one Backstab, plus one additional Back Attack per Backstab they have already bought. This means that the second Backstab requires three Back Attacks to be traded in, the third Backstab will require four Back Attacks, and so forth.