NPC: A poisonous green slime
Long Desc: Oozing out from the corners of the room, a green slime approaches.

A puddle of green slime is here, obstructing your way forward.  You can
probably get away from it with great effort, but you better do it quickly
because the puddle becomes larger and larger by the second.  It glows with a
poisonous green, making it undesirable to fight in close range.  However
hard you try, its body seems to bend and move in such a way to absorb your
hits.  You better find a way to defeat this creature quickly, because more
of them is surely to come.
It is a slime approximately 1'2" tall.

This NPC can be found in: A Disturbed Pyramid.