Monster Lore: Peryton

A Shadow Betrayed

A cursed mix of wings, talons, and a vampiric stag's head, the Peryton is a monstrous entity.  It is depraved relentless in its vicious pursuit to maim and devour the hearts of other creatures, holding a specific hatred for humans and elves.  Even injured, these creatures will hunt down detected foes, until at least one of them is dead.

Their feathering from a distance could be considered beautiful, and with wings tucked, settled upon the ground, the Peryton might pass for a lesser woodland being.  The moment one gets closer, though, you'll notice a good many things are off.

First, actually, would be the smell.  In this case, a lack of one.  Less sensitive noses would identify the creature as human, but those with a modicum of training or enhanced primal senses would pick no smell at all, coupled with an overwhelming sense of dread.  
  Standing over 7 feet tall, the Peryton's demonic stag face smiles with rows of razor-sharp teeth.  The plumage of their chest might tell you their gender (males tend to be blue, while females are a pale white), but soon you won't care.  Their antlers, jet black and harder than steel, are used to rend and impale, and their depraved form is resilient to all but magical weapons. 
As their eyes of orange flame pierce through the fog, any light that passes over them lies about their true form.
  For you see, the most peculiar element of a Peryton is their shadow.  This winged, evil beast will hiss before you, but its shadow will present as human.  Always.  Human.  

This oddity presents a plethora of curious theories, but few had evidence to match.
  Some Loremasters believe the false shadow to be an echo of the last creature the Peryton killed.  Given its penchant for violence against humans and elves, this was the prevailing theory for hundreds of years.  It wasn't until the haphazard findings of one Grenaldi Mayweather, a gnomish priest under the cover of twilight, who one night happened upon a nest of the creatures in the Ghastshadow Mountains.  She observed the flock tear into a pack of roaming Aarakocran, ambushed or set upon as they slept.  Just as history told us, the Peryton ripped open the chests of their victims, consuming the still-warm hearts with grim satisfaction.  Mayweather watched in dread curiosity, eager to solve the riddle of the shadow...  But the humanoid echo remained.  No winged shadows manifested.
  Mayweather was lucky to escape with her life, but returned soon after for more observation, this time with an elite guard to watch her back; the knowledge was too important not to be careful...

Hearts and Minds

It would also be Mayweather that would witness the first instance of a Peryton being born.  Though there are documented family units of a male and a female Peryton (though they'd be hard-pressed to care for their young, if not kill them), this instance within the nest involved two females.  
  Both left to hunt, smelling blood on the wind.  They were gone for hours.  When they returned, blood dripping from their claws, they delivered several chunks of flesh to the next to feast upon, and a still writhing human man!  Mayweather watched as her lookout - a young brown-eyed ranger - was clutched by one of the pair and pulled toward the other, like it was presenting a gift.  Firey smoke and twisting gray tendrils spilled from the one in waiting, before its teeth sank into the man's chest, ripping his beating heart from the cavity.  His body went limp, and Peryton female scarfed down the heart, her eyes shifting translucence in the penumbra.  
  Then Mayweather heard a sound that sent chills down her spine.  
Like an echo of a child's laugh.  A giggle in the gloom, small and innocent.  Then it grew, warping and dancing along the walls, raising in pitch and warble, until it is a chorus of cackling.  The other eyes in the nest rise and join in, their necks convulsing and twisting backward with the sound, a malevolent inversion of mirth and satisfaction.  The sound becomes a beast in and of itself, a roiling mass of whoops and hollers, striking chords and stark dissonance.  Vibrations spill out the mouth of the cave, whispers at the ears of the hidden spies, and shouts upon the walls that surround them.
  The guards around the gnome begin to clutch and claw at their ears, the cacophony bringing a few to tears.  Mayweather instinctually covers the sob of her closest ranger, insisting that he get himself together.
Then.
Silence.
  The smell of dread hits Mayweather's nostrils as she dares to peer into the nest.  All the Peryton stare straight ahead, their mouths gaping open - a frozen, terrifying smile.  Until they all snap their eyes...to her.

They made it out with one casualty.  Her second blue-eyed scout, snatched by a rogue talon before he could slip into the wooden door of a magnificent mansion.  
  Safe within the dimensional space, Mayweather vigorously wrote down her conclusions:
1. New Peryton are born by a female consuming the heart of a freshly killed humanoid.
2. Their shadows flicker into monstrous forms during the process of incubation.
3. When incubation begins, nearby Peryton gain heightened senses to protect the pregnant female, becoming even more violent.  The more there are, the stronger the pack's senses.
  Her fourth note she added weeks later, when her guards - while out hunting - were set upon by a pair of Peryton, seemingly tracking them for miles.  When they finally confronted the creatures, they were surprised to see two young Peryton, newborns - one with brown eyes and the other with blue, both with shadows of human form.  ...Felling the creatures was tough, but much worse for their psychology.  Poor guys.
4. Newborn Peryton share the eyes of the creature whose heart they were born from.  As they get older, and kill more for their own survival and pleasure, the blood tarnishes the eye color, shifting it to match the orange-red of the others.

Origin Theories

Mayweather and others theorized that the first Peryton was a cursed human or elf, twisted by a god of chaos.  The bards of old expanded upon this, marking its origin to infidelity, curses, and carrions feasting on cursed corpses.
  Given Mayweather's most recent expeditions, however, the clearest line exists through pure vehemence.  These aren't cursed humans - they were MADE by something.  Sometime in the first age, when great magics could be wielded by mere mortals, a wizard general - whose name is lost to time - sought a tactical edge against the elven and human alliances.  So he juxtaposed what he had on hand with fiendish blood.  An intellect unmatched, the alchemist rivaled the gods for a moment - before his heart was ripped from his chest...

Mind the shadows.  Watch the skies.
See you next time.
-Adamus