Medium humanoid, neutral evil

Armor Class 13
Hit Points 22 (4d8 + 4)
Speed 30 ft.

12 (+1) 16 (+3) 13 (+1) 14 (+2) 16 (+3) 14 (+2)

Skills Animal Handling +5, Deception +4, Intimidation +4, Perception +5
Damage Immunities acid
Condition Immunities paralyzed
Senses blindsight 60 ft. (blind beyond this radius), passive Perception 15
Languages Deep Speech, Undercommon
Challenge 1/2 (100 XP)

Special Traits

  • Bound in Jelly. The mydnari and its jelly are wholly reliant on each other. If the mydnari’s jelly is somehow separated from its master, the jelly dies within 1 minute. If the mydnari is separated from its jelly, it loses its blindsight, Acid Glob action, and Jelly Symbiosis trait.
  • Jelly Symbiosis. A creature that touches the mydnari or hits it with a melee attack while within 5 feet of it takes 2 (1d4) acid damage.
  • Ooze Empathy. A mydnari can use its Animal Handling skill on ooze type creatures with an Intelligence score of 5 or lower. An ooze never attacks a mydnari unless provoked.


  • Shortsword. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) piercing damage.
  • Acid Glob. Ranged Weapon Attack: +5 to hit, range 30/60 ft., one target. Hit: 5 (1d4 + 3) acid damage, and the target must succeed on a DC 12 Constitution saving throw or be poisoned for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.


This tall, lanky humanoid is sightless, its eyes nothing more than useless spots in its otherwise human face. The creature is encased in a sheath of thick orange jelly, almost as if it had been dipped in a giant pot of honey. The jelly wobbles and slides over the creature’s body as if alive.

Sightless Alchemists. The mydnari are an eyeless, evil subterranean race that lives alongside oozes. They delight in capturing other creatures and using the creatures for experimentation or as food for their colonies of oozes and slimes. They constantly experiment with new serums, tonics, and concoctions, striving to always improve themselves and their connection with their oozes.

Bound in Jelly. Each mydnari enters into a symbiotic relationship with a mutated strain of ochre jelly as soon as it is born. This is a sacred rite among the mydnari, and without this link a mydnari is cast out and soon succumbs to the elements. The mydnari provides long-term sustenance for the jelly, and the jelly provides the sightless mydnari with protection and the ability to better sense its environment.

Oozing Cities. The cities of the mydnari are dominated by flowing spires and twisting walkways, and they are always bathed in a sickly yellow-green radiance. Oozes and slimes are found almost everywhere, whether simply wandering along the street to clean up refuse or serving as living baths for mydnari nobles. Their cities also boast a large section dedicated to alchemy, and the sulfurous and sometimes noxious odors from the many alchemical labs float through the city for all to smell.

Detested Necessity. The mydnari are viewed with revulsion by duergar and other subterranean races who rely on their alchemy. Only derro and aboleths are known to tolerate the mydnari for any length of time.

Oozebound Nature. A mydnari doesn’t require sleep.

Section 15: Copyright Notice

Tome of Beasts 2. © 2020 Open Design LLC; Authors Wolfgang Baur, Celeste Conowitch, Darrin Drader, James Introcaso, Philip Larwood, Jeff Lee, Kelly Pawlik, Brian Suskind, Mike Welham.

This is not the complete section 15 entry - see the full license for this page