this is a joke item by the developers of guild wars it is a homage to dungeons and dragons, there are no ogres inthe world of tyria happy bidding you dipshits
This is a joke item! it is a sword. It is a refrence to a parody of D&D.
First some attacks the Darkness.
Then someone says the have a Ogre slaying knife. Its got +9 against ogres. It is assumed it is 1d4 of damage. Therefore a
1-4dmg
+9 vs ogre.
It is a wonderful wonderful joke
8bit remake of it
http://www.cybermoonstudios.com/8bitDandD.html