My item, any input would be great appreciated. =)
Hammer of Besting
Aura moderate Abjuration; CL 13th
Slot none; Price 60’500; Weight 5 lbs.
Description
Upon slaying a creature with this rune engraved +2 Warhammer the wielder may gain a resistance bonus on all Will saving throws equal to the HD possessed by the slain creature and spell resistance equal to 12+ the HD possessed by the slain creature, the effects last for 1 hour and only as long as the Warhammer is within the wielders possession. This may be done 3 times per day.
Construction
Requirements Craft Magic Arms and Armor, Spell Resistance, creator must have Will bonus 4 or greater; Cost 30,250 gp