Oblex
Overview
By experimenting on the slimes, jellies, and puddings that infest the depths of the Underdark, mind flayers created a special breed of ooze, the oblex - a slime capable of assaulting the minds of other creatures. Cunning hunters, these pools of jelly stalk prey, searching for the memories they so desperately crave. When oblexes feed on those thoughts, sometimes killing their victims, they can form weird copies of their prey, which help them to harvest even more victims for their dark masters.Memory Eaters
Oblexes feed on thoughts and memories. The sharper the mind, the better the meal, so oblexes hunt obviously intelligent targets such as wizards and other spellcasters. When suitable fare comes within reach, an oblex draws its body up to engulf its victim. As it withdraws, it plunders the creature’s mind, leaving its prey befuddled and confused.Ooze Nature
An oblex doesn’t require sleep.Oblex Spawn CR: 1/4 (50 XP)
STR
8 -1
DEX
16 +3
CON
15 +2
INT
14 +2
WIS
11 +0
CHA
10 +0
Amorphous. The oblex can move through a space as narrow as 1 inch wide without squeezing. Aversion to Fire. If the oblex takes fire damage, it has disadvantage on attack rolls and ability checks until the end of its next turn.
Actions
Pseudopod. Melee Weapon Attack: +5 to hit, reach 5 feet, one target. Hit: 1d4 + 3 bludgeoning damage plus 1d4 psychic damage.
Adult Oblex CR: 5 (1,800 XP)
STR
8 -1
DEX
19 +4
CON
16 +3
INT
19 +4
WIS
12 +1
CHA
15 +2
Amorphous. The oblex can move through a space as narrow as 1 inch wide without squeezing. Aversion to Fire. If the oblex takes fire damage, it has disadvantage on attack rolls and ability checks until the end of its next turn. Innate Spellcasting. The oblex’s innate spellcasting ability is Intelligence (spell save DC 15). It can innately cast the following spells, requiring no components:
- 3/day each: charm person (as 5th-level spell), color spray, detect thoughts, hold person (as 3rd-level spell)
Actions
Multiattack. The oblex makes one pseudopod attack and eats memories. Pseudopod. Melee Weapon Attack: +7 to hit, reach 5 feet, one target. Hit: 1d6 + 4 bludgeoning damage plus 2d4 psychic damage. Eat Memories. The oblex targets one creature it can see within 5 feet of it. The target must succeed on a DC 15 Wisdom saving throw or take 4d8 psychic damage and become memory drained until it finishes a short or long rest or until it benefits from the greater restoration or heal spell. Constructs, oozes, plants, and undead succeed on the save automatically. While memory drained, the target must roll a d4 and subtract the number rolled from any ability check or attack roll it makes. Each time the target is memory drained beyond the first, the die size increases by one: the d4 becomes a d6, the d6 becomes a d8, and so on until the die becomes a d20, at which point the target becomes unconscious for 1 hour. The effect then ends. When an oblex causes a target to become memory drained, the oblex learns all the languages the target knows and gains all its proficiencies, except for any saving throw proficiencies.
Elder Oblex CR: 10 (5,900 XP)
STR
15 +2
DEX
16 +3
CON
21 +5
INT
22 +6
WIS
13 +1
CHA
18 +4
Amorphous. The oblex can move through a space as narrow as 1 inch wide without squeezing. Aversion to Fire. If the oblex takes fire damage, it has disadvantage on attack rolls and ability checks until the end of its next turn. Innate Spellcasting. The oblex’s innate spellcasting ability is Intelligence (spell save DC 18). It can innately cast the following spells, requiring no material components:
- At will: charm person (as 5th-level spell), detect thoughts, hold person
- 3/day each: confusion, dimension door, dominate person, fear, hallucinatory terrain, hold monster, hypnotic pattern, telekinesis
Actions
Multiattack. The elder oblex makes two pseudopod attacks and eats memories. Pseudopod. Melee Weapon Attack: +7 to hit, reach 10 feet, one target. Hit: 4d6 + 3 bludgeoning damage plus 2d6 psychic damage. Eat Memories. The oblex targets one creature it can see within 5 feet of it. The target must succeed on a DC 18 Wisdom saving throw or take 8d10 psychic damage and become memory drained until it finishes a short or long rest or until it benefits from the greater restoration or heal spell. Constructs, oozes, plants, and undead succeed on the save automatically. While memory drained, the target must roll a d4 and subtract the number rolled from any ability check or attack roll it makes. Each time the target is memory drained beyond the first, the die size increases by one: the d4 becomes a d6, the d6 becomes a d8, and so on until the die becomes a d20, at which point the target becomes unconscious for 1 hour. The effect then ends. When an oblex causes a target to become memory drained, the oblex learns all the languages the target knows and gains all its proficiencies, except any saving throw proficiencies.
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