Steam Slitherer (5e Creature)
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Medium elemental, neutral
Death Burst. When the steam slitherer dies, it explodes in a cloud of steam. Each creature within 10 feet of the steam slitherer must succeed on a DC 11 Dexterity saving throw or take 21 (6d6) fire damage.
Steam Form. The steam slitherer can move through a space as narrow as 1 inch wide without squeezing. A creature that touches the steam slitherer or hits it with a melee attack while within 5 feet of it takes 7 (2d6) fire damage. In addition, the steam slitherer can enter a hostile creature's space and stop there.
Multiattack. The steam slitherer makes three attacks: one with its bite and two with its tentacles.
Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage plus 7 (2d6) fire damage.
Tentacles. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) bludgeoning damage plus 7 (2d6) fire damage.
A steam slitherer is an elemental creature of steam that resembles a large snake with many wispy tendrils of superheated steam. A steam slitherer's insubstantial body is scalding hot to the touch, granting it the ability to burn those that would attack it at close range and slip through the tiniest of gaps. When it is destroyed, its body disperses, spraying steam all around itself.
Elemental Nature. A steam slitherer doesn't require air, food, drink, or sleep.