A moss lurker has advantage on Dexterity (Stealth) checks to hide in forested or swampy terrain.

The moss lurker has advantage on Wisdom (Perception) checks that rely on hearing or smell.

While moss lurkers can use heavy weapons, they have disadvantage while wielding them.

A moss lurker can contaminate liquids or food with poison. Someone who consumes the contaminated substance must make a successful DC 11 Constitution saving throw or become poisoned for 1 hour. When the poison is introduced, the moss lurker can choose a poison that also causes the victim to fall unconscious, or to become paralyzed while poisoned in this way. An unconscious creature wakes if it takes damage, or if a creature uses an action to shake it awake.