The first thing you need 2 diside on is what element your sword will have then you need to come up with what it looks like in its second form, and any ablilitys it may have. (Please keep the abilitys close 2 what you think would go with your element.) Lets also keep the ablitys close to your cherecters personality 2. (U don't have 2 do this its just an idea.)
If you have any questons I'd love to here them so just post.