Minerva got into the tree pose, but almost lost her balance. She put both feet back on the and retried this time it worked. She put up her hand. "Professor I don't think it is just the spell that makes a wizard dark. The spell is considered dark because in most cases it is used for evil or to harm. In some cases like the jinxes they are used well as jokes like some have said, but the more horrible ones like the curses the wizard has to be dark before using to the spell to even think about using it, especially one that will kill another wizard."