Rock Manta

Small to Medium elemental, neutral

Armor Class 16 (natural armor)
Hit Points 5 (2d6+), 9 (3d6+), 17 (4d8+), 22 (5d8+)
Speed 10 ft., Flying 40 ft.

14 (+2) 12 (+1 12 (+1) 1 (–5) 12 (+1) 4 (–3)

Skills Stealth +5
Senses darkvision 90 ft., passive Perception 12
Languages none
Challenge 1/4 (50 XP) to 1 (200 XP)


  • Chameleon Camouflage. Rock manta have advantage on Dexterity (Stealth) checks made to hide in rocky terrain.
  • Photosensitive. Rock Mantas have disadvantage on attack rolls and Wisdom (Perception) checks based on sight when exposed to anything brighter than torchlight.


  • Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: based on size: 4 (1d3+2), 6 (1d4+3), 7 (2d4+2), 9 (2d4+4) piercing damage. If the Rock Manta hits with its bite attack it may make a Tail attack.
  • Tail. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: based on size: 4 (1d2+2), 4 (1d3+2), 5 (1d4+2), 6 (1d6+2) slashing damage.


Rock mantas are flying creatures that live in subterranean caves and caverns. They appear in size and shape to manta rays found in ocean environments except they possess a central serrated maw, and their hide is rocklike in texture and appearance.

Rock mantas can change their color to match their environment. They prefer to attach to a high wall or ceiling and wait in ambush.

Due to their subterranean existence, rock mantas are photosensitive and avoid anything brighter than torchlight.

Sages believe the rock manta appeared through a gate from the Elemental Plane of Earth. The nature of their flight is unknown. Rock mantas do not possess lairs.

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