Weapon Group (Maces and Clubs)

Type: Weapon Group
Source: Unearthed Arcana

You understand how to use maces and clubs.
Benefit: You make attack rolls with the following weapons normally: club, light mace, heavy mace, greatclub, maul, quarterstaff, sap, and warmace (two-handed use).
Normal: When using a weapon with which you are not procient, you take a -4 penalty on attack rolls.