Boitata

Fire Scales. A creature that touches the boitata or hits it with a melee attack while within 5 feet of it takes 5 (1d10) fire damage. In the end of its turn, any creature whithin 15ft takes 3 (1d6) fire damage.

Siege Monster. The boitata deals double damage to objects and structures.

Blinding Brightness. The boitata sheds bright light in a 30-foot radius and dim light in an additional 30 feet. Any creature whithin the bright light radius who looks directly to boitata must succed on a DC 18 Constitution saving throw or is blinded.

Multiattack. The boitata makes two bite attacks.

Bite. Melee Weapon Attack: +14 to hit, reach 10 ft., one target. Hit: 18 (2d8 + 9) piercing damage plus 5 (1d10) fire damage. If the target is a Large or smaller creature, it must succeed on a DC 19 Dexterity saving throw or be swallowed by the boitata. A swallowed creature is blinded and restrained, it has total cover against attacks and other effects outside the boitata, and it takes 21 (6d6) fire damage at the start of each of the boitata's turns.

If the boitata takes 20 damage or more on a single turn from a creature inside it, the boitata must succeed on a DC 21 Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, which fall prone in a space within 10 feet of the boitata. If the boitata dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 20 feet of movement, exiting prone.

Fire Breath (Recharge 5–6). The boitata exhales fire in a 30-foot cone. Each creature in that area must make a DC 17 Dexterity saving throw, taking 38 (12d6) fire damage on a failed save, or half as much damage on a successful one.