Amorphous
The oblex can move through a space as narrow as 1 inch wide without squeezing.
Adult Oblex
Medium Ooze · Lawful Evil
Armor Class14
Hit Points75 (10d8 + 30)
SpeedWalk 20 ft.
Challenge5
STR8
DEX19
CON16
INT19
WIS12
CHA15
Traits
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.
Sulfurous Impersonation
As a bonus action, the oblex can extrude a piece of itself that assumes the appearance of one Medium or smaller creature whose memories it has stolen. This simulacrum appears, feels, and sounds exactly like the creature it impersonates, though it smells faintly of sulfur. The oblex can impersonate different creatures, each one tethered to its body by a strand of slime that can extend up to 120 feet away. For all practical purposes, the simulacrum is the oblex, meaning that the oblex occupies its space and the simulacrum's space simultaneously. The slimy tether is immune to damage, but it is severed if there is no opening at least 1 inch wide between the oblex's main body and the simulacrum. The simulacrum disappears if the tether is severed.
Actions
Multiattack
The oblex makes one pseudopod attack and uses Eat Memories.
Pseudopod
Melee Weapon Attack +7 to hit, reach 5 ft., one target. 7 () 🔨 Bludgeoning damage plus 5 () 🧠 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 18 () 🧠 Psychic damage and become memory drained until it finishes a short or long rest or until it benefits from the or spell. Constructs, oozes, plants, and undead succeed on the save automatically.
While memory drained, the target must roll a 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 becomes a , the becomes a , and so on until the die becomes a , at which point the target becomes 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.
While memory drained, the target must roll a 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 becomes a , the becomes a , and so on until the die becomes a , at which point the target becomes 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.