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.
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.
Chameleon Skin. The troglodyte has advantage on Dexterity (Stealth) checks made to hide.
Stench. Any creature other than a troglodyte that starts its turn within 5 feet of the troglodyte must succeed on a DC 12 Constitution saving throw or be poisoned until the start of the creature's next turn. On a successful saving throw, the creature is immune to the stench of all troglodytes for 1 hour.
Sunlight Sensitivity. While in sunlight, the troglodyte has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.
Multiattack. The troglodyte makes three attacks: one with its bite and two with its claws.
Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target.
Hit: 4 (1d4 + 2) piercing damage.
Claw. Melee Weapon Attack: +4 to hit, reach 5 ft., one target.
Hit: 4 (1d4 + 2) slashing damage.