Squirming, ebony tentacles fill a 20-foot square on ground that you can see within range. For the duration, these tentacles turn the ground in that area into Difficult Terrain. Each creature in that area makes a Strength saving throw. On a failed save, it takes 3d6 Bludgeoning damage, and it has the Restrained condition until the spell ends. A creature also makes that save if it enters the area…

Level 4 Conjuration (Wizard) Casting Time: Action Range: 90 feet Components: V, S, M (a tentacle) Duration: Concentration, up to 1 minute Squirming, ebony tentacles fill a 20-foot square on ground that you can see within range. For the duration, these tentacles turn the ground in that area into Difficult Terrain. Each creature in that area makes a Strength saving throw. On a failed save, it…

Armor (studded leather), very rare (requires attunement) This dark, sea-soaked suit of armor smells of brine and is covered in eldritch runes. While wearing this armor, you gain a +1 bonus to Armor Class and can breathe underwater. In addition, while wearing the armor, you can cast the Black Tentacles spell (save DC 15) from it. When cast in this way, the spell targets a 15-foot square centered…

Armor (Studded Leather), Very Rare (Requires Attunement) This dark, sea-soaked suit of armor smells of brine and is covered in eldritch runes. While wearing this armor, you gain a +1 bonus to Armor Class and can breathe underwater. In addition, while wearing the armor, you can cast the Evard's Black Tentacles spell (save DC 15) from it. When cast in this way, the spell targets a 15-foot square…

Prince of Demons, the Sibilant Beast, and Master of the Spiraling Depths, Demogorgon is the embodiment of chaos, confusion, and destruction, seeking to corrupt all that is good and undermine order in the multiverse. The demon lord is a meld of different forms. He has a saurian lower body and clawed, webbed feet; suckered tentacles sprout from the shoulders of his great apelike torso, which is…

Unnatural subterranean hunters, darkmantles veil themselves in magical shadows and use their bizarre anatomies to disguise themselves as stalactites. When prey passes below, lurking darkmantles drop and unfurl their webbed tentacles, attempting to blind, suffocate, or crush their victims. Darkmantles share similarities with piercers and ropers and often hunt near those monsters. Scholars have…

Rod, rare (requires attunement) This rod ends in three rubbery tentacles. While holding the rod, you can take a Magic action to direct the tentacles to stretch outward, each one attacking a creature you can see within 15 feet of yourself. For each tentacle, make a melee attack roll with a +9 bonus. A tentacle deals 1d6 Psychic damage on a hit. If you hit the same target with all three tentacles,…

An enormous writhing mass formed of ropy black, earthwormlike tentacles. Something like twenty feet tall. Here and there, across the surface were great puckered mouths that dripped green goo. Beneath its central mass, two or three thicker tentacles terminated in enormous black hooves, on which it stamped forward. It carried the visage of some ancient gnarled tree when its shape was cast against…

Weapon (whip), rare This whip is made from the tentacles and guts of aberrant creatures, stitched to the webbed membranes of winged beasts and fused to the bark of a plant creature. Once the animus is placed, the tentacles begin to writhe and wriggle and the whip can latch and drag creatures along the ground with uncanny strength. You gain a +2 bonus to attack and damage rolls made with this…

You can call forth different aspects of the abyssal darkness. Arms of Ahriman. You can expend 2 Blood Points to cast the Black Tentacles spell. When you cast the spell in this way, the Black Tentacles deal 1d6 Bludgeoning damage and 2d6 Cold damage (instead of 3d6 Bludgeoning damage). Shrouding. You can expend 1 Blood Point to cast the Darkness spell.

Dismemberment sometimes isn’t enough to disable a zombie’s undying rage. Swarms of zombie limbs reanimate from the slough of zombie flesh molters and surge on hapless monster hunters who mistakenly believed their work is done.

An adult black dragon uses its acid breath to melt the construct defenders of a clockwork fortress By the time they’re adults, black dragons are among the greatest terrors in the lands they claim. Wretched swamps and monster-haunted ruins grow more dismal and spread under an adult black dragon’s influence. Morbid cultists and doomsayers frequently gather in the dragon’s service, bringing with…

Most young black dragons claim a hidden lair—typically a dismal place accessible through deadly ruins or a treacherous bog. They delight in exploiting fearful servants and might terrorize small communities or impress groups of kobolds or troglodytes into their service. Some ally themselves with powerful undead such as death knights and vampires or aberrations such as aboleths and kuo-toa.

Black dragon wyrmlings lurk in bogs and polluted waterways, hunting for prey and weaker creatures to overpower. While older wyrmlings eventually seek their own territories, recently hatched ones might hunt one another, seeking dominance over their clutch and slaying rivals they can’t subjugate.

Large Aberration (Mythos), Neutral Evil AC 12 Initiative +1 (11) HP 105 (10d10 + 50) Speed 40 ft.

An enormous writhing mass formed of ropy black, earthwormlike tentacles. Something like twenty feet tall. Here and there, across the surface were great puckered mouths that dripped green goo. Beneath its central mass, two or three thicker tentacles terminated in enormous black hooves, on which it stamped forward. It carried the visage of some ancient gnarled tree when its shape was cast against…

Where the creature’s arms should be, there are instead two writhing masses of deep purple tentacles, while four more protrude from its back. Its tongue lolls out as a long, wet, purple appendage. Throughout the creature’s body, weeping wounds open to protruding smaller tendrils and growths. The Dreg’s skin looks wet and saggy, and it moves with a strange wobble as it slops towards you. In…

Level 7 Conjuration (Bard, Cleric, Sorcerer, Warlock, Wizard) Casting Time: Action Range: Self Components: V, S Duration: Up to 8 hours You step into the border regions of the Ethereal Plane, where it overlaps with your current plane. You remain in the Border Ethereal for the duration. During this time, you can move in any direction. If you move up or down, every foot of movement costs an extra…

Catacomb-Scouring Scavenger

Huge Aberration (Mythos), Neutral Evil AC 16 Initiative +3 (13) HP 261 (18d12 + 144) Speed 60 ft.

Gricks can live for centuries, with the eldest growing to monstrous sizes. Grick ancients actively hunt more than they wait in ambush, and they have no qualms about devouring smaller gricks. Gricks Gricks are wormlike predators that burst from hiding—flailing and snapping—to consume whatever prey passes near. They hide in cavernous crags or amid deadfalls, the scattered bones and possessions of…

Swarms of crawling claws are typically animated by depraved necromancers. Occasionally, these grotesque swarms arise from mass graves or after tragedies, refusing to let their murderers escape their grasp. Crawling Claws Crawling claws are severed hands that move and act of their own murderous accord. These deathless appendages can spring to life from the severed limbs of killers and villains,…

Ravenous corpse eaters, carrion crawlers gravitate toward places of slaughter and decay. In such charnel environs, they feast on the dead with no qualms about their meals’ origins or freshness. Carrion crawlers have segmented bodies like gigantic cutworms. From beneath their multipart maws protrude eight thin, lashing tentacles. Creatures struck by these tentacles risk being paralyzed and…