[They] carefully entered the cavern, and were instantly assaulted by the scent of blood. The cavern floor [...] was deep with the creatures’ blood-red guano. (Tim Richardson, “Ecology of the Stirge”) Instinct: To suck blood

• Attach to an enemy
• Redirect an attack to its prey.
• Drink blood through its proboscis.
• See in the dark

Come away from an encounter with one of these vengeful spirits merely deaf and count yourself lucky for the rest of your peaceful, silent days. Often mistaken at first glance for a ghost or wandering spirit, the banshee reveals a far more deadly talent for sonic assault when angered. And her anger comes easy. A victim of betrayal (often by a loved one) the banshee makes known her displeasure with a roar or scream that can putrefy flesh and rend the senses. If you can help her get her vengeance, they say she might grant rewards. Whether the affection of a spurned spirit is a thing you’d want, well, that’s another question. Instinct: To get revenge

• Drown out all other sound with a ceaseless scream
• Unleash a skull-splitting noise
• Disappear into the mists