That is an official Marvel Comics card, approved by the home offices. It was created by John Jackman, inserted into a random foil package of Dangerous Divas, and sent out into the world. But wait. Who is the character?
One of the most enchanting aspects of this new set by Rittenhouse Archives makes it a mystery story. It allows the sketch artists to interpret any character in the Marvel Universe in female form. Quite a few distaff versions of traditionally male superhero stallions have been released and it is a hoot to try to identify them. The following cards are by John Jackman, Mauro Fodra, and Kristin Allen.
Can you figure out who they are?
The Sketchcard Saloon. 
Third from the bottom is Belladonna Boudreaux! I was so excited to recognize one.
Awesome, thanks!
Just my best guesses:
Jack of Hearts
Husk
Uhh, Hela
Deathcry
Moonstone
Moonknight
I have no clue.
I think the third one is Dreamqueen
4th one down is Lady Death Bird
2nd to last is the savage land mutant Whiteout
I’m late to the party but I can help you out with three of these cards.
The first Fodra is Dream Queen, the second Fodra is Deathcry, and the last one (my card) is Lorelei from Thor.
Thanks Kristin, she is lovely.
2nd is Meghan Summers
3rd is Dreamqueen
4th is Deathcry