Man, Monster and Magical Mutation

So, just going to throw this out here and thought alliteration (?) was a good way to get attention.

Anyways, on my story world of Eld, a lot of the monster line up came about either through drow alchemy or human alchemy. Though this only is in part of this. Magic was corrupted some time in the past (which would lead to the whole undead thing, but ignoring that) and with the corruption of the magic came several of the half beast/half human sorts that come out of lot's of mythology. And some from the Monster Manual.

These things became the gnolls, wolf-men and pig-men, minotaurs and the like. While elves and dwarves got to become fauns and satyrs and the like, usually helped along by a bit of indulgence and debauchery in the latter's case. So with this magical corruption, they lost any ability to become what they once were and created whole new monster races to be hunted or used. Except for the gnolls, no one touches the gnolls.

This means, do you use any sort of thing like this for your monsters, should they exist among your worlds? Chaos magic, wild magic or just the local mutations rising up from outside the Industrial Magical Factory?

 

No one's sure quite where the Corruption slipped in from. Hell, most the world didn't really know about it. But it was probably during one of the many wars and battles on it. Came in when the Elders and Gods were fighting it out with their new mortals. Though they had enough sense to keep it contained deep beneath the earth in the far North, but not before it got to one of the Elder of Life. Who was then imprisoned in the eventually ironically named City of Life, from which the undead sprang.

From there it got into the magic closest to the City of Life, which is in the middle of a jungle. It corrupted out into the early shapeshifters and lycans, turning them first and as a result, actually creating it's very own jailers by way of the gnolls. And it continued on and with some dips into the demonic, wrought changes into the elves and dwarves who used to use them to fight beside as often as the divine. Then one of the antagonist characters broke into the City of Life and also helped try to tap into the Corruptions prison in the North and kicked everything off.

Also, your name makes me think of a Word Bearers Chaos Marine.

 

They're the second line of defense against the undead that tend to try to get out of the jungle. If they make it through the trolls and feral elves that also watch from within it. Also eventually become the world's best vampire slayers. As a ten foot tall hyena people on the open plains, they tend to be hard to beat. That and their control of life and blood magic gives them plenty of power to keep an Elder god in check in the jungle. Nothing used to get past them. Then something did. And with it meant them getting all over the world, to the annoyance of almost everyone.