Sentient Gray Ooze

(Tales from the Yawning Portal: Against the Giants)

Medium ooze, Unaligned

Armor Class8
Hit Points22 (3d8 + 9)
Speed10 ft., climb 10 ft.
STRDEXCONINTWISCHA
12 (+1) 6 (-2) 16 (+3) 5 (-3) 6 (-2) 2 (-4)
Saving Throws—
SkillsStealth +2
Damage Vulnerabilities—
Damage Resistancesacid; cold; fire
Damage Immunities—
Condition Immunitiesblinded; deafened; exhaustion; frightened; prone
Sensesblindsight 60 ft. (blind beyond this radius), passive Perception 8
LanguagesCommon
Challenge1/2

Traits

Amorphous.

The ooze can move through a space as narrow as 1 inch wide without squeezing.

Corrode Metal.

Any nonmagical weapon made of metal that hits the ooze corrodes. After dealing damage, the weapon takes a permanent and cumulative −1 penalty to damage rolls. If its penalty drops to −5, the weapon is destroyed. Nonmagical ammunition made of metal that hits the ooze is destroyed after dealing damage.

The ooze can eat through 2-inch-thick, nonmagical metal in 1 round.

False Appearance.

While the ooze remains motionless, it is indistinguishable from an oily pool or wet rock.

Actions

Pseudopod.

Melee Attack Roll: +3 to hit, reach 5 ft., one target. Hit: 4 (1d6 + 1) bludgeoning damage plus 7 (2d6) acid damage, and if the target is wearing nonmagical metal armor, its armor is partly corroded and takes a permanent and cumulative −1 penalty to the AC it offers. The armor is destroyed if the penalty reduces its AC to 10.