|
As Desuma_Malevois says, what determines whether or not a weapon is suitable for backstab is whether or not it's usable by a single-classed thief. This DOES include clubs and quarterstaves.
So as Valygar's katana is only usable by human rangers, and the Staff of the Magi is only usable by mages, these weapons can't be used to backstab even though they're types of weapon usable by thieves. (Valygar's weapon is fixed by the BG2 FixPack so he can backstab with it)
|