Myrmex, Young 2014
CR 1 elemental
Small elemental, neutral good
Doesn’t require air food drink or sleep.
Advantage: smell Wis (Percept) checks.
Magically transmit simple messages and images to any creature within 120' of it that can understand a language. This telepathy doesn’t allow receiving creature to telepathically respond.
Difficult surfaces even ceilings no ability check.
Difficult terrain composed of earth or stone doesn’t cost the myrmex extra movement.
Bonus Actions
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. Can also choose to make 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 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details