Tales of Tolgard
These undead creatures are sinister, spectral figures cloaked in darkness. They have no visible features or appendages, except for their glowing red eyes.
Animals can sense wraiths and flee from their unnatural aura; also, wraiths despise sunlight. Wraiths are difficult foes because they not only drain the life from their victims, but anyone they slay will rise again as their spawn. Finally, wraiths are incorporeal.
Wraiths can be found anywhere.