Well I have one little idea for take use of that form http://www.furaffinity.net/view/13071930/ . I want take that collar like and object just to change my form to a Demon-bat and that includes some interesting things, maybe be a bit OP for the RP's but try to win ;P he. The first thing I have in mind for that form is the use of the blood yep all hear well in that form is a bloodsucker, other things is the same of the ability of the Hidan but not need any symbol on the floor, the duration depends of the quantity of blood have drink just saying "The pact is sealed" because why no is a demon can seal your soul to one bad fate, ;P maybe need to think more things but at the moment is all of I have on the mind if anyone have a idea just tell to me ^^ I think that form is for be really Dom and for the Dom fighting and how I see is really OP ;P