Not quite Manapool....
it would be turning this;
[img]http://img3.wikia.nocookie.net/__cb20130802221704/disney/images/archive/0/0b/20130802222119!Ariel-Princess6.jpg[/img]

Into this; [img]http://fc07.deviantart.net/fs71/i/2014/022/2/8/disney_genderbend___the_little_mermaid___ariel_by_bisho_s-d73busr.jpg[/img]