This is the door to the Ythryn observatory. It has 30 hit points, which is it's hit point maximum.

MAKER'S NOTE: The door's CR should be 0 (0XP), not 0 (10XP). It should also have all it's ability scores be 0, which is an instant fail for any check, save, or the like. It's a door. You don't get XP for killing a door. The door cannot dodge a lightning bolt. You can get XP from any slaadi that may or may not lurk behind the door, as well as XP from the magen that may or may not guard this door, but not any XP from the door. It is not animate. It's just a door. It will look very funny in your encounter for Ythryn. That's why it was made.