Cinderspawn

Frostfire Form. The Cinderspawn can move through a space as narrow as 1 inch wide without squeezing. A creature that touches the Cinderspawn or hits it with a melee attack while within 5 feet of it takes 5 (1d10) cold damage. In addition, the Cinderspawn can enter a hostile creature's space and stop there. The first time it enters a creature's space on a turn, that creature takes 5 (1d10) cold damage as the Cinderspawn drains it's body heat.

Illumination. The Cinderspawn sheds bright light in a 15-foot radius and dim light in an additional 15 feet.

Mobility. When the Cinderspawn uses the Dash action, difficult terrain doesn't cost it extra movement on that turn. When it makes a melee attack against a creature, the Cinderspawn don't provoke opportunity attacks from that creature for the rest of the turn, whether the attack hits or not.

Water Susceptibility. For every 5 feet the Cinderspawn moves in water, or for every gallon of water splashed on it, it takes 1 cold damage.

Multiattack. The elemental makes two charisma drain attacks.

Charisma Drain. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) cold damage. If the target is a creature, the target's Charisma score is reduced by 1d4.The Cinderspawn gains temporary hit points equal to the amount the target's charisma was reduced by. The target dies if this reduces its Charisma to 0. Otherwise, the reduction lasts until the target finishes a short or long rest.