I know that some larger law firms have processes to give you "free" legal representation. I have worked with a large law firm before that was willing to take on promising start ups in exchange for a note (converted during the next round). The additional benefit of this type of arrangement is that their Rolodex is usually pretty deep, and they have business analyst that will match you up with investors that "fit" your startup best. If you want more info about what the details of my arrangement where email me.