Shem - I did a pile of Dead God Placeables last year for one of my Doctor Who Modules as well as use in Demoness Tales, quite similar to the MotB Myrkul thing.
Ever play Planescape - Torment?
The bit with Mrykul is the equivalent of meeting Ravel Puzzleweaver in that game. Heck, MotB is basically why people say that its worth playing the original NWN 2 campaign, to give you the beginnings of that story
Anywho, this is a Mecheon promise, and these don't always happen, but I'm gonna post some music which might explain my plans for this one...
In Babylonian mythology, Tiamat wasn't a 5 headed dragon, but instead the goddess of the primordial ocean. She mated with Abzu, god of the primordial rivers, and in this union they created the younger gods. But Abzu realised these newer gods would overthrow him, and hearing him conspire, Enki, or Ea, the wise, slew him, and for a time became leader of these young gods
Driven on by Kingu, god of unskilled labor (Yes, seriously) Tiamat went for revenge, creating 11 monsters. However, against these monsters stood Marduk, son of Enki, the storm god wielding the power of the winds. He slew Tiamat and turned her corpse into the Earth and the heavens, her weeping eyes becoming rivers, her tail the Milky Way
Now, making all 11 of Tiamat's children would be fun. The problem is, well, a lot of them could be made ingame easily. I mean, a Weimic is a perfect substitute for Uridimmu, just make a lion head and eagle feet for the human and you've got a fine (And customisable!) Ugallu, and the Stingers make perfect Girtabilu
I however will attempt to make some of her kids that can't just be made with current stuff, and maybe even a version of Tiamat herself based off my favourite 2D action adventure...