Gray Ooze

Medium ooze, unaligned

Armor Class 8

Hit Points 22 ( 3d8+9 )

Speed 10ft Climb: 10ft

STR

12 +1

DEX

6 -2

CON

16 +3

INT

1 -5

WIS

6 -2

CHA

2 -4

Skills Stealth +2

Damage Resistances acid, cold, fire

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

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

Languages -

Challenge 1/2

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 Weapon Attack: +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.