before black defusing currents resisted

Olhydra

Monsters Princes of the Apocalypse

in the black depths of vast seas or enthroned among jagged reefs. Olhydra waits for the chance to enter the Material Plane through elemental water nodes or when called by the proper rituals. Whether

, currents and tides are exceptionally strong and treacherous. Any ability checks made to safely navigate or control a vessel moving through these waters has disadvantage. Aquatic creatures that have

Chapter 9: Mantol-Derith

Compendium - Sources->Dungeons & Dragons->Out of the Abyss

. Despite its usefulness and the safety it enjoys, Mantol-Derith has never become a proper town. Those who maintain it as a trade hub have resisted any urge for expansion, apart from installing basic

a foothold in the Underdark. This presence grew into a power base that serves the Black Network well, and which is now being made available to the characters. Upon arrival, however, the characters

Cobblehook Cove Locations

Compendium - Sources->Dungeons & Dragons->Dragon Delves

to Sablewing by name. When the black dragon seized control of the crew, Pierre and a few others refused to swear loyalty to him. Sablewing killed the other Corsairs who resisted but spared Pierre and

green sail looks newly sewn and depicts a grinning black dragon. B3: Crew Quarters Rickety doors lead into each of these moldy, wooden structures. This room is dirty and jammed full of bunks. A table

Olhydra

Compendium - Sources->Dungeons & Dragons->Princes of the Apocalypse

the black depths of vast seas or enthroned among jagged reefs. Olhydra waits for the chance to enter the Material Plane through elemental water nodes or when called by the proper rituals. Whether she

miles of the lair. A downpour occurs once every 2d12 hours, and lasts 1d3 hours. Downpours are so heavy that creatures moving overland travel at half normal speed. Within 5 miles of the lair, currents

Maelstrom

Compendium - Sources->Dungeons & Dragons->Storm King's Thunder

natural phenomenon sometimes causes the ocean currents to form a great whirlpool with enough strength to draw ships down into it. These vessels are torn apart as they are pulled down, and the wreckage

feet deep. Large and smaller creatures treat the staircases as difficult terrain. Giant Clam d100 Treasure 01–25 None 26–75 A pink grapefruit-sized pearl worth 500 gp 76–90 A black grapefruit

Morkoth

Compendium - Sources->Dungeons & Dragons->Volo's Guide to Monsters

to glide on planar currents, maintains the island’s environment, and keeps the place safe from harmful external effects. A morkoth’s island might be found anywhere from the bottom of the ocean to the

, shield, witch bolt 2nd level (3 slots): darkness, detect thoughts, shatter 3rd level (3 slots): dispel magic, lightning bolt, sending 4th level (3 slots): dimension door, Evard’s black tentacles

Fane Locations

Compendium - Sources->Dungeons & Dragons->Princes of the Apocalypse

pool requires DC 10 Strength (Athletics) checks due to the swirling currents. Any creature that fails such a check is swept into the stream. The stream is 4 feet deep, cold, and swift. Any creature

benefit from this effect only once per day. F11. Foot of the Obelisk This cavern is a vertical shaft. Rising up the shaft is a black stone obelisk, twenty feet on a side, with a stone staircase

Torrents Locations

Compendium - Sources->Dungeons & Dragons->Princes of the Apocalypse

and provides no impediment. Underwater Passage. If the characters explore beneath the water, read the following: Forty feet beneath the water, the walls are constructed of worked stone. Red and black

mosaics of tentacles flank a set of black marble doors in the south wall. Reliefs of long, curving fangs line the arc of the door frame. The double doors push open to reveal an underwater passage to

Necropolis Locations (Y20-Y29)

Compendium - Sources->Dungeons & Dragons->Icewind Dale: Rime of the Frostmaiden

"Rite of the Arcane Octad"). Y21. Obelisk A sixty-foot-tall obelisk of black stone, its surface covered in arcane runes, projects from the ground. A thin crack has formed on one side, stretching from

, read: An elderly woman sits rigidly on a black throne, shrouded in ice. She wears a crown of entwined iron tentacles, and her forehead is bruised where the band fits tightly against her skull. An

Maelstrom Level 1

Compendium - Sources->Dungeons & Dragons->Storm King's Thunder

sinkhole (area 1) by a flooded passage with a lowered portcullis. An anemone chest stands in the southeast corner. It contains a black sack made from a merrow’s bladder. The sack is full of dead fish

southernmost chamber and one in the northernmost chamber. Their limbs are wrapped in kelp to keep them from drifting. The giants are sensitive to water currents, so that any creature that swims through a

Necropolis Locations (Y1-Y9)

Compendium - Sources->Dungeons & Dragons->Icewind Dale: Rime of the Frostmaiden

. Chain Lightning Stadium The air around this amphitheater is charged with static. Cracked steps descend to the stadium floor, where a tiny glittering object rests on a pedestal of black stone. Three

first time on a turn takes 40 (9d8) lightning damage. When the barrier appears, read: The shimmering head and shoulders of a woman blink into existence above the arena floor. Electrical currents course

Lesser Cavern Locations

Compendium - Sources->Dungeons & Dragons->Descent into the Lost Caverns of Tsojcanth

back of the cave is a cranny mostly free of fungus. A black-cloaked figure, motionless, is wedged into the crack. Originally this was another cultivated fungus farm like area L6, but slime molds are

position in defiance of the water’s swiftest currents. L13: Underground Lake A river flows into the south side of this high-vaulted cavern, feeding a glassy, ebon-hued lake. Drops of water fall from the

Lesser Caverns Locations

Compendium - Sources->Dungeons & Dragons->Quests from the Infinite Staircase

shades blankets most of the fungi, as well as the walls and ceiling. Near the back of the cave is a cranny mostly free of fungus. A black-cloaked figure, motionless, is wedged into the crack

direction at a speed of 30 feet or to hold its position in defiance of the water’s swiftest currents. L14: Underground Lake A river flows into the south side of this high-vaulted cavern, feeding a

Colossus Locations

Compendium - Sources->Dungeons & Dragons->Princes of the Apocalypse

opens a small vent in the center of the ceiling, and natural air currents draw the fumes out of the chamber in a few moments. Characters to notice the steady airflow. The vent closes again 1 minute

, uneven causeway of natural rock leads out into the middle, to a point where two crooked pillars of glassy black rock jut up on either side of a great altar of the same stone. Just beyond the altar, a

Area Locations

Compendium - Sources->Dungeons & Dragons->Vecna: Nest of the Eldritch Eye

kill any creature that enters the tunnel. Upon entering the tunnel for the first time, a character who has a passive Wisdom (Perception) score of 15 or higher notices odd waves and currents that suggest

The bottom of the stairway opens into a wide sanctuary with a vaulted ceiling. Stone pews are arranged in orderly rows. Black candles burning green flames occupy niches along the walls. Atop a pulpit

Maelstrom Level 2

Compendium - Sources->Dungeons & Dragons->Storm King's Thunder

head to toe in black kelp. Pushing aside the sarcophagus lid requires a DC 22 Strength (Athletics) check. Arrayed along the walls are ten upright stone sarcophagi, their barnacle-covered lids sculpted

with small black pearls (worth 7,500 gp) and a coral-and-pearl necklace (worth 2,500 gp). 23. Scrying Pool The central feature of this air-filled chamber is a semicircular basin 20 feet in diameter

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