Description (so far): Designed for slaying vampires this sharpened shaft of silver deals damage as a wooden stake of the same size minus 1 (minimum 1). When a vampire is hit with this weapon it deals damage as normal (bypassing DR) and the vampire must make a DC 20 Fortitude save or fall to the ground helpless for 1 round. While the vampire is helpless in this manner, a creature can attempt to use the silver stake to finish off the vampire by driving it through the vampire's heart as a full-round action. Once the debilitating effect of the silver stake has ended, the vampire can pull out the stake as a move action. A vampire slain with a silver stake is subject to the rules and limitations of slaying a vampire with a wooden stake as described under vampire weaknesses.
This mirrors the heartstake bolt from ARG
I'm currently playing a Dhampir Kinslayer (Inquisitor Archetype) and I'm trying to think of a way to incorporate silver in to the staking mechanic. I've used wooden stakes in melee to finish off helpless vampires before (vamp rendered helpless through magical means then coup de grace with stake). I think this fits the flavor of the vampire hunter fluff this archetype has and was just wondering how balanced this weapon would be.
The item has every chance of existing. Iron stakes can be used as wooden ones. (look at the wooden stake's description). This would just be an iron stake cast in silver (cost would be 25 gp per stake)