Crystal Ooze | Free Monster for D&D and PF2e

“At first glance, I thought there was nothing of value in this empty room. But upon further inspection, I gave a gleeful shout, pulling an oval-shaped sphere of crystal from a crack in the wall. Excitement turned to panic when I felt searing pain shoot through my hands, and saw pseudopods emerge from the shell to begin its attack.”

—The Written Account of a Tomb Robber

Crystal Ooze - 5e

Small ooze, unaligned

Armor Class 16 (natural armor)

Hit Points 52 (8d6 + 24)

Speed 10 ft.

 Saving Throws Con +5

Damage Vulnerabilities thunder

Damage Immunities acid, lightning, poison

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

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

Languages —

Challenge 1 (200 XP)      Proficiency Bonus +2

Acidic Shell. Any creature within 5 feet of the ooze takes 2 (1d4) acid damage when the crystal ooze is struck with a weapon attack as shards of solid acid break off its form.

Any nonmagical weapon made of metal or wood 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 or wood that hits the ooze is destroyed after dealing damage.

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

Actions

Pseudopod. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) bludgeoning damage plus 3 (1d6) acid damage. 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.

Withdraw. The ooze withdraws into its shell, gaining a +2 bonus to AC. While in its shell, its speed is 0, and it has advantage on all Constitution checks and saving throws. It can emerge from its shell as a bonus action.

Crystal Ooze Creature 2 - PF2e

Uncommon, Small, Mindless, Ooze

Perception +4; motion sense (precise) 60 feet, no vision

Skills Stealth +6

Str +3, Dex –3, Con +4, Int –5, Wis –1, Cha –5

Motion Sense A crystal ooze can sense nearby motion through vibration and air movement.

—

AC 17; Fort +11, Ref +4, Will +6

HP 35; Immunities acid, bleed, critical hits, lightning, mental, poison, precision, unconscious, visual; Weaknesses sonic 5

Acidic Shell A creature that hits the crystal ooze with a metal or wooden weapon must succeed at a DC 17 Reflex save or take 1d6 acid damage. Also on a failed save, the weapon takes the same amount of acid damage (after dealing damage to the ooze as normal). Thrown weapons and ammunition take this damage automatically with no save.

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Speed 10 feet

Melee [one-action] pseudopod +9, Damage 1d6+3 bludgeoning plus 1d6 acid and corrosive touch

Corrosive Touch When the crystal ooze hits a creature with its pseudopod, any acid damage is dealt to the creature’s armor or clothing as well as the creature.

Withdraw [one-action] The crystal ooze withdraws into its shell. This increases its AC to 19, but it can’t act except to reemerge, which it can do as a single action.