Yolonaut commanders report encountering massive, sentient tree-like organisms while exploring the swamps of Yavoro. These psionic marshland guardians communicate with Priestesses through telepathy. Also highly empathic, Yavors sense the intentions of those entering their domain. Sinister intruders are sucked into sinkholes and engulfed in roots, while altruistic visitors receive Petals of Vitality. These petals induce cellular regeneration of dead tissue, theoretically reanimating corpses.