Notes:

Created by 中川るい（Dr.ワルイー） via Pixiv

Danbooru (NSFW Website)

Translation via Danbooru:
Formerly just a regular human, Madoka was duped into making a contract with kyubey and was subsequently turned into M.O.D.O.K. the magical girl. Calling herself the Goddess and using using her vast magical power and "entropy manipulation ability", she annihilated all witches on Earth.