SRD:Maul of the Titans

Maul of the Titans: This mallet is 8 feet long. If used as a weapon, it is the equivalent of a +3 greatclub and deals triple damage against inanimate objects. However, the wielder must have a Strength of at least 18 to wield it properly. Otherwise, she takes a –4 penalty on attack rolls.

Strong evocation; CL 15th; Craft Wondrous Item, Craft Magic Arms and Armor, clenched fist; Price 25,305 gp; Cost 12,305 gp + 480 XP; Weight 160 lb.