From publisher blurb:
Why Did it Have to Be Snakes?
Always a classic. From the powerful spawn of the World Serpent Jörmungandr to the mythical hydra. The flying coatl and the (totally not a) medusa. These legendary creatures come in all sorts of sizes, ready to crush, envenom, and petrify delvers. Or swallow them whole.
And of course, since no fantasy world is complete without serpent cults, this book covers them as well. "I will not turn into a snake. It never helps."
We disagree! Come ... join us. The great and powerful Dulsa Thoom will lead you to true happiness! His followers travel the world to bring word of his greatness, and also sell you healing balms and oils.
This 60-page book includes
A brief history of Jörmungandr and its influence on the monsters in the book
Build-a-Snek to customize serpent-monsters (and serpent-people!) to your needs
Rules enhancements for snakelike beings
Several dozen variations on 10 types of creatures
Information on snake cults and their leaders
Now we know why it had to be snakes! How could it be anything else?