Flithidir are creatures of the Feywilds and, due to the nature of that world, lean heavily toward chaotic alignments. An evil Flithidir is exceedingly rare.

You know Common, Sylvan and one other exotic language of your choice. 

Your Strength score decreases by 2. Your Charisma and Dexterity scores increase by 2.

Flithidir mature quickly, reaching adulthood at only 10 years of age, but can live upwards of 150 years.

Flithidir usually stand about 2 and half to 3 feet tall. Your size is small. 

Your base walking speed is 20 feet. You have a fly speed of 35 feet.

Your creature type is Fey, rather than humanoid.

You may use your action to polymorph yourself into a small humanoid,  into a small or smaller bird,  or back into your true Fey form. Your statistics, other than size and speed, stay the same in each form. In bird form, any equipment being carried or worn is not transformed and must be held by a friendly creature or be left behind. No matter the form your hair or feathers are bright or multicolored. You revert to your true form if you are killed or knocked unconscious. 

You know and can innately cast vicious mockery and minor illusion, requiring no material components. You may only use minor illusion in this manner to create an auditory illusion. Additionally,  at level 3 you learn the Charm Person and Enthrall spells, if you do not already know them.  These do not count against the number of spells you know, and are always prepared.  Your spellcasting ability for these spells is Charisma. 

You gain proficiency in the Persuasion and Deception skills.

You may use your action to begin a cacophony of strange, loud, and distracting bird-like sounds. Up to 3 creatures of your choice within 10 feet of you must make a Constitution Saving throw or have disadvantage on their next attack roll or ability check. The DC for this ability is 8 + your proficiency modifier + your charisma. You may use this ability a number equal to your proficiency score. All uses recharge after a long rest.