Demon, Leech — fantasy monster illustration. Demon, Leech is a large fiend (Challenge Rating 11).

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Demon, Leech

Large Fiend, chaotic evil

AC
17
HP
147
Speed
30
CR
11

Armor Class 17 (natural armor)

Hit Points 147 (14d10+70)

Speed 30 ft., swim 40 ft.


STR
19 (+4)
DEX
16 (+3)
CON
21 (+5)
INT
11 (+0)
WIS
12 (+1)
CHA
7 (-2)

Skills Perception +1

Damage Resistances cold, fire, lightning; nonmagic B/P/S attacks

Damage Immunities acid, poison

Condition Immunities poisoned, prone

Senses darkvision 90', passive Perception 11

Languages Abyssal, telepathy 120'

Challenge 11


Traits

Amphibious. Can breathe air and water.

Blood Sense. Can pinpoint by scent the location of creatures that aren't Constructs or Undead within 30' of it.

Magic Resistance. Advantage: spell/magic effect saves.

Actions

Multiattack. One Bite and two Tentacle Bites or two Bite attacks.

Bite. Melee Weapon Attack: +8 to hit, 10 ft., one target, 14 (3d6+4) piercing damage + 9 (2d8) necrotic.

Tentacle Bite. Melee Weapon Attack: +8 to hit, 5 ft., one target, 11 (2d6+4) piercing damage and 4 (1d8) necrotic and demon can attach its tentacle to target. Has two tentacles each of which can attach to only one target. While tentacle is attached demon can't use that tentacle to make Tentacle Bites target is restrained and demon doesn't attack with it. Instead at start of each of demon's turns each creature with tentacle attached loses 11 (2d6+4) hp due to blood loss and demon gains equal temp hp equal. Demon can add temp hp gained from this attack together and can add it to temp hp gained from Release Swarm. Demon's temp hp can't exceed half its hp max. Demon can detach one or both tentacles as a bonus action. A creature including target can use its action to detach demon's tentacle by succeeding on a DC 17 Str check.

Release Swarm (Recharge 5-6). Shakes loose dozens of leeches creating a leech swarm. Swarm acts as ally of demon and obeys its spoken commands. Swarm remains for 1 min until demon dies or until demon dismisses it as a bonus action. If demon is within 5 ft. of the swarm it can use its action to consume the swarm gaining temp hp equal to swarm's current hp. It can add temp hp gained this way with temp hp from Tentacle Bite. Demon's temp hp can't exceed half its hp max. Can have only one swarm active at a time.

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Demon, Leech — fantasy monster illustrationPrimary
FTTHelper · auto-generated · monster · monster

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Further reading

Jetpack7 Game Master Series
The Game Master's Book of Random Encounters
Jeff Ashworth · 2020
The Game Master's Book of Traps, Puzzles and Dungeons
Jeff Ashworth · 2022
The Game Master's Book of Legendary Dragons
Aaron Hübrich · 2022