15 (natural armor)
22 (3d8+9)
walk 5 ft., climb 5 ft.
Stealth +5
blindsight 30 ft., darkvision 60 ft.
1/2
While the piercer remains motionless on the ceiling, it is indistinguishable from a normal stalactite.
The piercer can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Melee Weapon Attack: +3 to hit, one creature directly underneath the piercer. 3 (1d6) piercing damage per 10 feet fallen, up to 21 (6d6). Miss: The piercer takes half the normal falling damage for the distance fallen.