I got another Idea (I posted it already so sorry if you consider it a spam)
Title: Twisted side of Nature/ Curse of Mother Earth
Description: Nature was always seen as something beautiful and pure, yet no one knows about other side of a coin. Show 'em that Mother Earth can be more twisted than madman's mind!
Make a player skin, that is supposed to ressemble a hostile or non-hostile creature/person that appearence has been changed by Mother Earth itself or it was borns like that!
It can have veins on it's body, fungus or poison ivy. We really do lack nature based skins like that. It can be nether/end/overworld inspired skin, but it has to have some vegetation itself (chorus fruit, weeping veins, nether wart and so)
