From publisher blurb: The sluagh are a vile race of shape-shifting sorcerers found throughout the galaxy. Also known as Lords of Dark Matter and Void Demons, though they are native to the space between material dimensions rather than creatures of the lower planes, the sluagh were cruel rulers of over a thousand systems, enslaving systems and using native populations as sacrifices to demon-gods in exchange for vast eldritch powers. Though this empire was brought down by a coalition of races that depended on pure magic to join forces and oppose them, the unaging sluagh hid on hundreds of different worlds, waiting for the time to rise again. That time is now. Starfarer Adversaries: Sluagh provides two sluagh stat-blocks (CR 6 and CR 10), suggestions on how they may integrate themselves into the dark reaches of galactic civilization, and a new weapon fusion seal, the void rune. Starfarer Adversaries: Because the vacuum of space doesn't kill you fast enough!