Piercer

Medium Monstrosity, Unaligned

AC: 15

Initiative: +1 (11)

HP: 22 (3d8 + 9)

Speed: 5 ft., climb 5 ft.

STR
10 (+0)
DEX
13 (+1)
CON
16 (+3)
INT
1 (-5)
WIS
7 (-2)
CHA
3 (-4)

Skills: Stealth +5

Senses: blindsight 30 ft., darkvision 60 ft., Passive Perception 8

CR: 1/2 (XP 100; PB +2)

Habitat: Underdark

False Appearance.

While the piercer remains motionless on the ceiling, it is indistinguishable from a normal stalactite.

Spider Climb.

The piercer can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Actions

Drop.

Melee Weapon Attack: +3 to hit, one creature directly underneath the piercer. Hit: 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.

Find this creature in the encounter builder

Piercer

Source: Monster Manual (2014), p. 252 - Licenses and attribution