Bite. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 10 (1d8 + 6) piercing damage. If the target is a Medium or smaller creature, it must succeed on a DC 16 Dexterity saving throw or be swallowed by the caecilia. A swallowed creature is blinded and restrained, it has total cover against attacks and other effects outside the caecilia, and it takes 7 (2d6) acid damage at the start of each of the caecilia's turns. If the caecilia takes 15 damage or more on a single turn from a creature inside it, the caecilia must succeed on a DC 22 Constitution saving throw at the end of that turn or regurgitate all swallowes creatures, which fall prone in a space within 10 feet of the caecilia. If the caecilia dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 10 feet of movement, exiting prone.
Description
This giant gray wormlike creature is about 30' long. They are meat-eaters and can be found nearly anywhere. Caecilia often lie in wait in loose soil just below the surface. Whenever a small party of animals or humans pass, they shoot up out of the ground and begin biting with their large mouths and sharp teeth.