This iron-shod oaken rod is blackened and weathered, yet sturdy.

Crafted from wood exposed to the Negative Energy Plane, a rod of enervating strike functions as a +1 heavy mace. In addition, when you successfully strike a creature with the rod in melee, the target is subjected to an inflict light wounds effect (1d8+5 damage; Will DC 11 half). If you score a critical hit with the rod, the creature is instead subjected to an inflict serious wounds effect (3d8+15 damage; Will DC 14 half).
When you use the rod on a minor negative-dominant plane, its inflict effects are empowered as if by the Empower Spell feat. When used on a major negative-dominant plane, these effects are maximized as if by the Maximize Spell feat.

Prerequisites: Craft Magic Arms and Armor, Craft Rod, inflict serious wounds.
Cost to Create: 9,000 gp (plus 312 gp for base item), 720 XP, 18 days.