Gray Ooze

Medium ooze, unaligned

Armor Class 8

Hit Points 22 (3d8+9)

Speed 10ft., climb 10ft.

Skills Stealth +2

Damage Resistances acid, cold, fire

Condition Immunities blinded, charmed, deafened, exhaustion, frightened, prone

Senses blindsight 60ft. (blind beyond this radius), passive Perception 8

Languages -

Challenge 1/2 (100 XP)

Traits

Amorphous

The ooze can move through a space as narrow as 1in 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 2in-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 Weapon Attack: +3 to hit, reach 5ft., 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.