Yrthaks

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77KB, 400x272px

How have you addressed them in your campaigns? Where do they come from, and how do they live? Have you done anything unique with them? What strange breeds of yrthak exist in your worlds?

For fags who think their campaigns are too 4dgy and cool for yrthaks, here's why you're a fucking idiot for not including them:
-That horn on top of their heads? That thing shoots sonic energy. You know, the one thing that nobody ever thinks to protect themselves against? You know, the thing that's behind sonic fucking booms? Yeah, this thing shoots what's basically a beam of that shit.
-They can also use this Fuck You, I'm a Yrthak beam to blow shit up. Well, what kind of shit, you may ask. Probably stupid shit like thatch-roofed cottages or mud huts. Haha, NOPE. This thing blasts through ships, solid stone, metal walls, ANYTHING nonmagical. A castle wall? Obliterated. A bank vault door? Kaboomed. A top-of-the-line battleship? Sank.
-They look like dragons, but they aren't dragons at all: excellent example of the weird shit magic-based evolution can come up with
-They use blindsight with an organ on their tongue, meaning that illusions ain't gonna do diddly shit to fool them
-They're smart; they're not intelligent enough to speak, but they're roughly on par with Jurassic Park raptors, i.e. they're smart enough to hunt in packs and set fucking traps. From above. Shit your pants yet?
-They can live pretty much anywhere; they like mountainous regions the best, but they'll do awesome in whatever underground areas you have, and they don't seem to mind heat and cold too much, either
-PCs love them, too: Can be trained to make kickass mounts, will provide an interesting fight that they'll be sure to remember, and provide the thrill of fighting dragons even if they're too low-level for great wyrms and shit.

TL;DR Yrthaks kick ass; what have you done with them in your campaign?