Hope you like this idea out of my funky mind.. You gotta wish something and then the next person is gonna corrupt it and also wish something for him/her-self.. e.g. I wish I could fly. Then you can corrupt it like- 'Denied, cuz then you'll annoy the flying birds' I wish I could be invisible. then you can corrupt it like- 'Accepted, then you can steal things for me' . .etc.