Help on skill stab

Current upkeeper: Argail
Using time      : 1
Skill cost      : 18
Skill type      : offensive (single)
Affecting stats : Dex, Str
Affecting skills: Anatomy, increase pain, twist, weapon skill
This skill allows you to stab in  the similar way as in assassination but  due
to the lack of suprise and accuracy it is not as effective. Though this  skill
cannot stun the opponent there's a small chance of causing the target's  focus
to  falter.  Using  two daggers  at  the  same time  can  increase  the damage
inflicted slightly.

Spiritual power < List > Stabbing