Trapper

Large monstrosity, Unaligned

Armor Class13 (natural armor)
Hit Points68 (8d10 + 24)
Speed20 ft., climb 20 ft.
STRDEXCONINTWISCHA
17 (+3) 10 (+0) 17 (+3) 2 (-4) 13 (+1) 4 (-3)
Saving Throws—
SkillsStealth +2
Damage Vulnerabilities—
Damage Resistances—
Damage Immunities—
Condition Immunities—
Sensesblindsight 30 ft., darkvision 60 ft., passive Perception 11
Languages—
Challenge3

Traits

False Appearance.

If the trapper is motionless on a floor, wall, or ceiling at the start of combat, it has advantage on its initiative roll. Moreover, if a creature hasn't observed the trapper move or act, that creature must succeed on a DC 18 Intelligence (Investigation) check to discern that the trapper isn't part of the floor, wall, or ceiling.

Spider Climb.

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

Actions

Smother.

One Large or smaller creature within 10 feet of the trapper must succeed on a DC 13 Dexterity saving throw or be grappled (escape DC 14). Until the grapple ends, the target takes 13 (3d6 + 3) bludgeoning damage plus 3 (1d6) acid damage at the start of each of its turns. While grappled in this way, the target is restrained, blinded, and deprived of air. The trapper can smother only one creature at a time.