3e SRD:Exotic Weapon Proficiency
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Exotic Weapon Proficiency [General]
Prerequisite: Base attack bonus +1 or higher.
Benefit: The character makes attack rolls with the weapon normally.
Normal: A character who uses a weapon without being proficient with it suffers a -4 penalty on attack rolls.
Special: The character can gain this feat multiple times. Each time The character takes the feat, it applies to a new weapon. Proficiency with the bastard sword or the dwarven waraxe has a prereqs of Str 13+.