Soulrider

Resembling a lamprey or hagfish with a long whiplike tail, a soulrider uses its harmless sucker to hitch rides on a creature's soul. This seemingly simple connection transcends the physical, attaching directly to the host's soul and even riding along with the soul to its final destination.

Soulrider (Creature -1), Spawning Soulrider (Creature 1)

Although soulriders were created in an attempt to tilt the scale of Pharasma’s judgment, many psychopomps are adamant that they don’t interfere with the process. However, nosoi are frequently tasked with clearing out soulrider infestations, and esoboks seem to take the creatures’ existence as a personal affront.