Environment Tables (Sunken Rlyeh City Encounter Supplement)

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The following tables are the City of Rlyeh encounters for the Sunken Rlyeh environment.

Rlyeh City Encounters

This table is for encounters in Rlyeh, or encounters occurring within visual range of the city’s inhabitants. The DM may elect to select and prepare encounters in advance, or assign a probability of encounters in a given time interval, or mandate a randomly selected encounter. If duplicate random encounters occur, reroll.

d12 Party Level 5-8 Party Level 9-12 Party Level 13-16 Party Level 17-20 Party Level 21+
1 3 Deep Ones (5e Race) 5 Deep Ones (5e Race) 1 Great Water Elemental 2 Great Water Elementals 3 Great Water Elementals
2 3 Giant Octopi 6 Giant Octopi 9 Giant Octopi 1 Colossal Octopus 1 Krakentua
1 3 Deep Ones (5e Creatures) 5 Deep Ones (5e Creatures) 1 Sinii Krai 2 Sinii Krai 4 Sinii Krai
4 1 Eye of the Deep 2 Eye of the Deep 4 Eye of the Deep 1 Con Rit 2 Con Rit
5 2 Dire Crabs 4 Dire Crabs 1 Colossal Ocean Catfish 1 Hammerclaw Crab 2 Hammerclaw Crabs
6 2 Eurypterid 4 Eurypterid 1 Young Orange Dragon 1 Adult Orange Dragon 1 Ancient Orange Dragon
7 1 Tentacle Devil 2 Tentacle Devils 4 Tentacle Devils 1 Shoggoth 2 Shoggoth
8 1 Stonefin 2 Stonefin 1 Aboleth 2 Aboleth 1 Laernean Hydra
9 1 Deep One Priest of Dagon 1 Young Green Dragon 1 Adult Green Dragon 1 Adult and 1 Young Green Dragon 1 Ancient Green Dragon
10 2 Sea Hags 1 Deep One Behemoth 2 Water Elementals 2 Deep One Behemoths 1 Pearl Titan
11 2 Sea Slime 3 Sea Slime 4 Sea Slime 1 Silver Giant 2 Silver Giants
12 10 Deep One Hybrids roll twice in next lowest column roll twice in next lowest column roll twice in next lowest column roll twice in next lowest column

Instructions: Party Level assumes a balanced party of four characters in the level range shown. DM may adjust encounter strength as appropriate.

Creatures encountered in their lair may have wealth/treasure there. DM may place appropriate treasure, or roll randomly using whatever treasure tables are available. Random treasure should be rolled in advance of any interaction, in case the item(s) would be of any use to the owner. If random treasure rolls indicate armor or weapons, DM should adjust the style/type to be whatever is favored by that creature type, as appropriate. For example, if a treasure roll for a Deep One Priest of Dagon results in a +1 Sword, it should be changed to a +1 Quarterstaff.

Creatures encountered in Rlyeh but outside of their lair will not have wealth on their persons except: Deep Ones (5e Race) as described below; Deep Ones(5e Creatures), Deep One Priests of Dagon, Deep One Behemoths, Tentacle Devils, Pearl Titans, Silver Giants, and Sea Hags each have 10% of their XP value in gold, gems, or jewelry items.


Rlyeh City Encounter Descriptions
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AbolethIntelligent and capable, the Aboleth is in the area watchful for those seeking the gate to the Elemental Plane of Water. It will take advantage for food or profit.
Adult Green Dragon The Adult Green Dragon periodically comes up from Rlyeh to hunt, increase its treasure stash, or generally cause trouble. It has minions in Rlyeh to guard its hoard while it is away.
Adult Orange DragonThe Adult Orange Dragon is a narcissistic bully, and will attempt to intimidate a party using bluster and insults. His goal is to profit from any encounter, not necessarily to fight or kill. He loves to be worshipped or flattered.
Ancient Green Dragon The Ancient Green Dragon periodically comes up from Rlyeh to hunt, increase its treasure stash, or generally cause trouble. It has minions in Rlyeh to guard its hoard while it is away.
Ancient Orange DragonThe Ancient Orange Dragon is a narcissistic bully, and will attempt to intimidate a party using bluster and insults. His goal is to profit from any encounter, not necessarily to fight or kill. He loves to be worshipped or flattered.
Colossal Ocean CatfishThe Colossal Ocean Catfish has all the specs of the Colossal Catfish, but dwells in the ocean. It is a bottom-feeder. There are many of them lurking in the slime-covered open structures of Rlyeh, watchful for unsuspecting prey. They have an insatiable hunger and cannot avoid the temptation of a quick and easy meal.
Colossal Octopus Ever hungry, Colossal Octopi will attack for food but will beat a hasty retreat if their prey are well able to defend themselves.
Con Rit The Con Rit occasionally emerges from its hidey hole at Rlyeh, to hunt for food. The gate has been an excellent locale for dining.
Deep One (5e Race)These characters are of the 5e Race described in the D&D Wiki, and are detailed below. They may be on a pilgrimage, guarding the approaches to the gate, seeking treasure, etc.
Deep One Behemoth Deep One Behemoths are typically on a mission for Father Dagon or Mother Hydra. They despise outsiders and will attack on sight.
Deep One HybridDeep One Hybrids live in fear and awe of just about any other creature in Rlyeh. They are reclusive but will do the bidding of other servants of Cthulhu or Dagon without question. They will defend themselves ferociously if attacked by outsiders.
Deep One Priest of Dagon The Priest of Dagon is an emissary from one of the temples in Rlyeh. He may be in or near a chapel or temple, out on a mission, or looking for converts or potential sacrifices.
Dire Crab Dire Crabs scuttle about the dark and ghastly slime-ridden alleys and alcoves of Rlyeh, always ready for a quick meal.
Eurypterid Ever hungry, Eurypterid will attack for food, and once engaged will fight to the death.
Eye of the Deep Eyes of the Deep occasionally stalk prey near or in the gate.
Giant Octopus Ever hungry, Giant Octopi will attack for food but will beat a hasty retreat if their prey are well able to defend themselves.
Great Water Elemental Great Water Elementals in Rlyeh are typically guarding some location. They will attack any intelligent creatures which approach but fail to present a symbol of Cthulhu.
Hammerclaw CrabThe Hammerclaw Crab occasionally emerges from its hidey hole to hunt for food in Rlyeh. It avoids crowds such as the market or bazaar, but may lurk in open buildings or alleys.
KrakentuaThe Krakentua controls a vast swath of Rlyeh, and is in telepathic communion with the dead Great Old Ones. It has many slaves and worshippers there. It occasionally travels through the gate for purposes unknown.
Laernean Hydra A Laernean Hydra found in its lair has a source of oxygen there. If outside of its lair, it is either hunting for food or prowling near the lair.
Pearl Titan The Pearl Titans of Rlyeh are lawful evil and each controls land, slaves and vassals, and a cyclopean mansion there. They are not necessarily allied with the servants of Cthulhu or even other Pearl Titans, and each may find reason to deal with outsiders.
Sea Hag Sea Hags frequent the area due to the presence of the gate and the variety of life forms it draws. They kill out of spite and in hopes of personal gain.
Sea SlimeSea Slimes take advantage of slime and seaweed in the water to surprise their prey.
ShoggothShoggoth prowl the darkest corners of Rlyeh, mostly ignoring unintelligent creatures which also avoid the Shoggoth. They hate intelligent life forms and will attack any that invade their space. They especially hate Elder Things and will engage them to the exclusion of others (at least until all of the Elder Things are dispatched).
Silver GiantSilver Giants in the area are Chaotic Neutral and not aligned with any particular faction in Rlyeh. They can be negotiated with, especially if valuable tomes or special secrets are offered. They may even serve as guides in Rlyeh.
Sinii KraiSinii Krai love to hunt for fish in and around the gate. Wherever they are, they don't care for invasions of their privacy or space, and will attack if provoked in any way…
Tentacle DevilTentacle Devils in Rlyeh typically travel in gangs causing trouble, but may be guarding a location or on a mission in service of more powerful beings.
Water ElementalWater Elementals in Rlyeh are typically guarding some location. They will attack any intelligent creatures which approach but fail to present a symbol of Cthulhu.
Young Green DragonThe Young Green Dragon is always on the lookout for food, trouble, and profit. It has minions in its lair in Rlyeh to guard its hoard; select appropriate minions from the table, or determine randomly, from a lower column.
Young Orange DragonThe Young Orange Dragon is a narcissistic bully, and will attempt to intimidate a party using bluster and insults. His goal is to profit from any encounter, not necessarily to fight or kill. He loves to be worshipped or flattered.
roll twiceA mixed party of trouble... Avoid duplicates (roll one die again to achieve a different result). The resulting creatures or parties will be allies, or at least sharing a common goal, one possibly in the service or thrall of the other.


Deep Ones (5e Race):

A party of 3 Deep Ones includes the equivalent of a Knight, a Priest, and a Thug. In addition to the capabilities identified for these NPC types, they share the following attributes: Speed 35 ft., swim 45 ft.; Senses: darkvision 60 ft.; Amphibious; Languages: common, aquan, and deep speech. Attacks as described for the NPC type or for the Deep One race.

Further, each has these individual attributes shown below. A party of 5 Deep Ones includes two additional Thugs.

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Knight Priest Thug Thug #2 (party of 5 only) Thug #3 (party of 5 only)
Alignment: Neutral Lawful Evil Neutral Evil Neutral Chaotic Evil
Proficiencies:Stealth, PerceptionSurvival, NatureStealth, PerceptionAthletics, PerceptionStealth, Intimidation
Cantrips: minor illusionlight, sacred flame, thaumaturgy, guidanceray of frost resistance shocking grasp
Magic Items:+1 Greatsword; +6 to hit, 11 slashing damage+1 Chain Shirt, AC 14+1 Mace; +5 to hit, 6 bludgeoning damage+1 Leather Armor, AC 12+1 Trident; +5 to hit, 6 piercing damage
Wealth: 20gp10gp, 2x10gp gems5 gp, 1x10gp ring6 gp2 gp, 1x8gp ring

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