During their side-track into the Gardens of Ynn, my players found a couple of intricately made, serrated obsidian arrowheads. The Ranger in the party wants to craft some arrows with them, so I came up with the following:
A Call to Death
Instead of the usual whistling sound, A Call to Death "plays" a musical note as it cuts the air. Birds of a certain kind heed this call and gather to the area. Originally these arrowheads were crafted for the Sidhe nobility. A single Call to Death was to be fired at the beginning of the hunt. Afterwards, the Sidhe would slaughter the naive, cheated flock.