The following is Open Game Content from a 3PP Source
Sword of the Gladiator
Aura moderate transmutation; CL 3rd
Slot none; Price 20,400 gp; Weight 8 lbs.
The sword of the gladiator is a +2 pata. Three times per day the gladiator can speak a command word while wielding the pata and receive a +4 bonus to Strength and Constitution. The ability bonus lasts for 3 minutes and the sword wielder must wait at least 1 full minute after the bonus ends before activating it once more.
Requirements Craft Magic Arms and Armor, bears endurance, bulls strength; Cost 6,400 gp