Homebrew
False Appearance. While a giant horned cave leech remains motionless on the ceiling, it is indistinguishable from a normal stalactite. Spider Climb. The giant horned cave leech can climb difficult surfaces, including upside down on the ceilings, without needing to make an ability check.
Drop. Melee Weapon Attack: +3 to hit, one creature directly underneath the giant horned cave leech. Hit: 3 ( 1d6 ) piercing damage per 2 squares fallen, up to 21 ( 6d6 ). Miss: The giant horned cave leech takes half the normal falling damage for the distance fallen.
Underdark