Impractically Large Weapons
A variety of enchantments that allow your characters to wield impractically large weapons:
Light
A light weapon is treated as one size category smaller than it actually is for purposes of determining whether or not a given character can wield it effectively.
Moderate transmutation; CL 3th; Craft Magic Arms and Armor, Reduce Person; Price +1 bonus.
Heavy
A heavy weapon deals damage as if it was one size category larger than it actually is.
Moderate transmutation; CL 3th; Craft Magic Arms and Armor, Enlarge Person; Price +1 bonus.
Massive
A massive weapon both deals damage as if it were one size category larger that it actually is and is treated as one size category larger than it actually is for purposes of determining whether or not a given character can wield it effectively.
Strong transmutation; CL 9th; Craft Magic Arms and Armor, Enlarge Person, Reduce Person; Price +2 bonus.