Tiny ooze, unaligned

Armor Class 15
Hit Points 27 (6d4 + 12)
Speed 20 ft., climb 20 ft., swim 20 ft.

3 (-4) 17 (+3) 14 (+2) 1 (-5) 6 (-2) 1 (-5)

Skills Stealth +7 (+9 in swamp terrain)
Damage Resistances acid
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, prone
Senses blindsight 60 ft. (blind beyond this radius), passive Perception 8
Challenge 1/4 (50 XP)

Special Traits

  • Amorphous. The dipsa can move through a space as narrow as 1 inch wide without squeezing.
  • Discreet Bite. The bite of a dipsa is barely perceptible and the wound is quickly anesthetized. A creature bitten must succeed on a DC 15 Wisdom (Perception) check to notice the attack or any damage taken from it.
  • Translucent. The dipsa can take the Hide action as a bonus action on each of its turns.


  • Bite. Melee Weapon Attack: +7 to hit, reach 0 ft., one creature in the dipsa’s space. Hit: 1 piercing damage, and the dipsa attaches to the target. A creature with a dipsa attached takes 3 (1d6) acid damage per round per dipsa, and it must make a successful DC 12 Constitution saving throw or have its hit point maximum reduced by an amount equal to the damage taken. If a creature’s hit point maximum is reduced to 0 by this effect, the creature dies. This reduction to a creature’s hit point maximum lasts until it is affected by a lesser restoration spell or comparable magic.


Except for a pair of tiny fangs, the entire body of this yellowish-green worm looks like a ropey tangle of slime-covered tubes and puddles of mucus.


Anesthetic Ooze. Many jungle clans believe the dipsa is an eyeless snake, but it is a tubular ooze with a lethal poisonous bite. The dipsa’s venom has an anesthetic quality that allows the ooze to cling to creatures and slowly turn their innards to jelly without being noticed until the victim falls down dead. Once the poison’s numbing property wears off, however, victims report an agonizing sense of burning from the inside out.

Tiny Fangs. A dipsa’s undulating movement evokes that of a snake as much as its serpentine form, but close examination reveals that it has neither bones nor internal organs, only tiny fangs of the same color and substance as the rest of its body. A dipsa never exceeds 1 foot in length. Its coloration oscillates between sickly hues of yellow or green.

Gelatinous Eggs. Dipsas are hermaphroditic. When two dipsas breed, they leave behind about 100 gelatinous eggs in a small puddle of highly acidic milt. A dozen become fertilized and survive long enough to hatch, after which they immediately devour the others.

Section 15: Copyright Notice

Tome of Beasts. Copyright 2016, Open Design; Authors Chris Harris, Dan Dillon, Rodrigo Garcia Carmona, and Wolfgang Baur.