Cinder Winged Butterfly

Flyby. The butterfly doesn't provoke opportunity attacks when it flies out of an enemy's reach.

Graceful Evasion. When the butterfly is subjected to an effect that allows it to make a Dexterity saving throw to take only half damage, it instead takes no damage if it succeeds on the saving throw, and only half damage if it fails.

Burning Touch. Anything flammable that the butterfly touches immediately bursts into flames.

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

Bite. melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 1 slashing damage.

Blazing Radiance. Blasting with a great light within a 20 ft. radius of blinding light with additional 5 ft. of bright light and another 5 ft. from that as dim light. Causing the blinded to last for a turn to those who fail a DC 13 DEX save.

Ember Blizzard. Foregoing melee attacks the butterfly may make a flyby attack dispersing a torrent of cinders within a radius of 25 ft of the target. that burns for 3 turns, dealing 1 fire damage every turn within the area of effect. This ability goes on cool down for 4 turns upon use. 

Flaming Body. The butterfly sheds bright light in a 10 foot radius and dim light for another 5 feet. In addition, if a creature hits the butterfly with a melee attack or starts it's turn while grappling with the butterfly, it takes 1d4 fire damage.

Fire Absorption.  Whenever the butterfly would be dealt fire damage, it regains hit points equal to half the fire damage dealt.

Spark of Life. Upon death, the butterfly explodes outward within 15 ft. All within range must make a DC 12 Dexterity saving throw or take 5 (2d6) fire damage.