So, I recently watched Maleficent: Mistress of Evil. I was particularly intrigued by the dark fey, and would love to make them as a race. But probably change the name slightly.

So far, I have: +1 wis, flight equal to walking speed (30ft), (want something else here, not sure of the trait). .

Subraces: desert: +1 con and strength, unarmoured AC: 13+dex, and mold earth cantrip (not sure on cantrip).

Tundra: +1 dex and intelligence, resistance to cold damage, frostbite (again, not sure).

Jungle: +1 dex and Charisma, camouflage: change appearance to environment as bonus action (advantage of stealth checks for round), thorn whip (not sure).

Am I missing any? If I am, I'll post them here if I remember/watch it again. Well, what do you think? Any ideas on this, and the traits? Any subraces I missed? 

Flight, even just equal to walking speed is very powerful.   Frankly what you got is already overly powerful.

How would you change it? That's the whole point of the thread! 

Well - compare it to the Aarakocra. They get 25 ft walk 50 ft fly as well as +3 to stats and 1d4 unarmed attacks with claws. That's it.

So you're toning down the fly speed - but it's still fly speed and therefore very powerful. This means you want the extras to be only a little better than having 1d4 unarmed attacks.

Giving resistances and a cantrip while also giving flight is absolutely OP.

Ok. I value your input, but how would you make it balanced? I can say that ranger is bad. It won't help make it better. So what are your ideas?

If you have them a pseudo flying feature where they have to land every turn or fall that would help to rebalance things.

Ok. I think that maybe I should put more into subraces, so that the race as a whole is more balanced. Otherwise the amount of features is too much, and it would be op. So: +1 wisdom and flight equal to walking speed, but have to land at the end of your turn. 30ft walking speed. 

Subraces: I want suggestions. And I forgot forest (+1 dex and wis or con?, Speak with animals 1/LR?). So any more help would be greatly appreciated!

A ideia i have about flying creatures are limited the fly aspect by risk of exhaustion. The player can fly a number of times equal the proefiency bonus, for 5min. Gain all the fly "charges" back after a short rest. The player can fly more the numbers of the proefiency bonus, but they gain levels of exhaustion. 

You could mix avariel with tiefling .

Sure I am aware that the mix will in fact most likely render a tiefling but you can use the wings and the skeleton perhaps .I am as well in the process of making such a race with the horns and wings as well . One useful page I found about mixed races focuses as well on the one previously mentioned and I think it names them Tempestas Avarialien . You can choose also to only have one of the two : fire resistance and resistance of being  charmed or put to sleep . Finally I'd suggest you check out Drya'boli as well . You can always correct me if I am wrong