Another monster classic, the roper is a dungeon predator/scavenger that nabs its prey by camouflaging itself as a stalagmite or stalactite. The latter is rarer, probably because in every instance I can recall, the roper has always been depicted pointy side up; perhaps dungeon masters never consciously consider that ropers can also adhere to cave ceilings.
Ropers have enormous, toothy maws and sticky tentacles that lash out and seize their prey. Although their exceptional Strength and Constitution and below-average Dexterity suggest a brute fighter, ropers are ambush attackers, using their fast and flexible tendrils to compensate for their lack of mobility (their speed is only 10 feet per round, whether crawling or climbing).
Despite their low Dexterity, ropers have double proficiency in Stealth, along with the False Appearance feature, which allows it to blend in perfectly with its surroundings. I understand this to mean that passive Perception—and even Searching—will never reveal a roper for what it is as long as it’s holding still. Its Stealth skill comes into play only if it’s moving. Thus, a stationary roper will always take its opponents by surprise, as long as its eye is closed and its tendrils retracted until it strikes. (more…)