von Harlequin*NORDIC » 30 Okt 2013, 17:14
Weapon, Armor, and Shield Proficiency
A character who uses a weapon with which he or she is not proficient takes a -4 penalty on attack rolls.
A character who wears armor and/or uses a shield with which he or she is not proficient takes the armor’s (and/or shield’s) armor check penalty on attack rolls and on all Strength-based and Dexterity-based ability and skill checks. The penalty for nonproficiency with armor stacks with the penalty for nonproficiency with shields