Enenra (5e Creature)
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Medium elemental (shapechanger),
Damage Resistances lightning, thunder; bludgeoning, piercing, and slashing from nonmagical attacks
Ash Form. The enenra can enter a hostile creature's space and stop there. The first time it enters a creature's space on a turn, or a creature begins its turn within the enenra's space, that creature takes X (2d10) poison damage (unless that creature is not required to breathe). As long as a creature occupies the same space as the enenra, it is blinded. Upon exiting the enenral's space, the creature must succeed on a DC X Constitution saving throw or remain blinded. The target can repeat the saving throw at the end of each of its turns (as long as it is not within the elemental), ending the blindness on itself on a success.
Illumination. The enenra sheds bright light in a 15-foot radius and dim light in an additional 15 feet.
Smog Camouflage. While in dim light, darkness, or within 5 feet of a cloud of smoke, the enenra can take the Hide action as a bonus action.
Water Susceptibility. For every 5 feet the enenra moves in water, or for every gallon of water splashed on it, it takes 1 cold damage.
Multiattack. The enenra makes two slam attacks.
Slam. Melee Weapon Attack: +X to hit, reach 5 ft., one target. Hit: 15 (3d8 + 5) bludgeoning damage plus X (2d6 + 5). If the target is a creature or a flammable object, it ignites. Until a creature takes an action to douse the fire, the target takes 5 (1d10) fire damage at the start of each of its turns.