Gray Ooze

Medium ooze, unaligned

Armor Class 8 (dex)

Hit Points 22 (3d8+9)

Speed walk 10 ft., climb 10 ft.

Challenge CR 1/2 (100 XP) · Proficiency bonus +2

STR12+1

DEX6−2

CON16+3

INT1−5

WIS6−2

CHA2−4

Skills: Stealth +2

Resistances: acid, cold, fire

Condition immunities: Blinded, Charmed, Deafened, Exhaustion, Frightened, Prone

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

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 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.