I think you're talking about Quickfang. It's a hunter exclusive sword that you get from completing the campaign that is held in a different stance than other swords.
English
-
Oooo Thanks :) , and there is an special weapon for the warlocks? or i can use that sword with other classes?
-
There's a class specific sword for each class after the campaign. Hunters get Quickfang, Warlocks get Eternity's Edge, and Titans get Crown-Splitter. Each of these can only be equipped by the class that earns it.