Death Burst. When the beetle dies, it explodes in a burst of fire and magma. Each creature within 10 feet of it must make a DC 11 Dexterity saving throw, taking 10 (3d6) fire damage on a failed save, or half as much damage on a successful one. Flammable objects that aren’t being worn or carried in that area are ignited

Illumination. The beetle sheds bright light in a 20- foot radius and dim light for an additional 20 feet.

Bite. Melee Weapon Attack: +1 to hit, reach 5 ft., one target. Hit: 2 (1d6 - 1) slashing damage plus 3 (1d6) fire damage.

Spit Fire. Ranged Weapon Attack: +2 to hit, range 30/120 ft., one target. Hit: 3 (1d6) fire damage