Shadows Over Ustalav
These glass vials are held within stylized cold-iron casings etched with strange runes, necromantic designs, or other eldritch markings. Within the vial roils a small wisp of white
vapor, churning as if caught in a miniature vortex of air. To capture a haunt’s energies within a haunt siphon, you need only twist the metal casing to open the vial in the same round that the haunt manifests (a standard action)—this can be before or after the haunt has acted. You must be within the haunt’s area of influence to use a haunt siphon. When you activate a haunt siphon,it deals positive energy damage to a single haunt or undead. If it deals enough damage to the haunt to disperse it, the mist inside the haunt siphon glows green—if it does not the haunt siphon is still expended and becomes nonmagical.