Fairy Tail Super. Book 2: Black Mirror

Edolas, a mirror world where people resemble in both name and appearance, that of the people in Earthland. However, they are quite different, and the world's magic has long disappeared.
However, a new threat has appeared in Edolas. A terribly powerful foe. She resembles Pumkin Everezz right down to her face, and even refers to herself as Pumkin. However, she is nothing like the pure hearted saiyan, she is terrifying individual with a thirst to wipe out all "Mortals".

Just who is Pumkin Black? And can the Fairy Tail from Earthland put take her down? Or will they be the next Mortals to be Eliminated?