Large Elemental, neutral good
Armor Class 16 (natural armor)
Hit Points 119 (14d10+42)
Speed walk +40, climb +40, burrow +40
Challenge 9
Skills perception +3
Damage Resistances poison; nonmagic B/P/S attacks
Condition Immunities exhaustion, paralyzed, petrified, poisoned, prone, unconscious
Senses blindsight 60', passive Perception 17
Languages understands Common, Terran, and Undercommon but can't speak, telepathy 120'
Elemental Nature. Doesn't require air food drink or sleep.
Keen Smell. Advantage: smell Wis (Percept) checks.
Stone Walk. Difficult terrain composed of earth or stone doesn't cost the myrmex extra movement.
Multiattack. Three Bite attacks.
Bite. Melee Weapon Attack: +8 to hit, 5 ft., one target, 13 (2d8+4) piercing damage + 7 (2d6) poison.
Earth Shift. Ranged Spell Attack: +7 to hit 60' 1 tgt in contact with ground. Target pushed up to 15 ft. in direction of myrmex's choice speed half til end of its next turn.
Static Barrage (Recharge 5-6). Blasts foes with painful psychic static. Each creature of myrmex's choice within 30' of it: 18 (4d8) psychic (DC 15 Int half).
Wall of Earth. Makes a wall of earth spring out of earth or rock on a point it can sense within 30' of it. Works like wall of stone spell except can create only one 10 ft. × 10 ft. panel with AC 13 and 15 hp.
Earth Manipulation. Can manipulate and move earth within 30' of it that fits within a 5 ft. cube. This manipulation is limited only by its imagination but it often includes creating caricatures of creatures to tell stories of travels or etching symbols to denote dangerous caverns or similar markers for those in the colony. It can also choose to make the ground within 10 ft. of it difficult terrain or to make difficult terrain normal if the ground is earth or stone. Changes caused by Earth Manipulation are permanent.
Source: Tome of Beasts 3 · OGL/Open