Starfinder: Conduit
Conduits are the unfortunate victims of the vile and feared Drinkers. Created through the Drinker’s death-gaze ability, they appear to be desiccated corpses – except these corpses can move and attack. They have one mission in their unholy unlife, and that is to collect the life force of other creatures and either uses it to maintain their forms, or to be transferred to the Drinkers. These creatures will actively seek out others of their own kind and will attempt to siphon their life force. Note they will only hunt and try to drain humanoids.
If the attack succeeds, the victim is restored to their former vitality and appear as if nothing has happened. The only thing is that they have to feed like this once every two hours. They will have exactly two minutes to track down a target and inflict the same fate on them. If they are incapable of doing so, the life force they have consumed will automatically be transferred to the nearest Drinker, or it is lost. As such the Conduit always tries to remain within 1000 feet of the Drinker which created it. Needless to say the Drinkers want to keep them nearby to prevent the loss of the precious life force energy! If they are incapable of finding a victim to drain, they revert to the desiccated form in 1d4 rounds and are forever dead.
Any victims they produce as a result will likewise rise in two hours and will actively hunt down more victims, increasing their numbers exponentially. Just one victim can wipe out an entire community in a matter of hours.
The monster gains benefits from the creation of more of these creatures – if they were injured. For every victim that it’s ‘spawn’ creates heals the creature one hit point per point of constitution or hit dice. They cannot use these to create a pool of hit points. The Drinkers do not like it when the Conduits use the energy to heal damage. The energy is lost in doing so, and as a result the Drinkers will often destroy any Conduits who have sustained any damage.
As long as they appear to be normal, they are fully capable of speech and retain the memories they had before becoming a Conduit.