In a deal it hopes will produce a trove of new properties to exploit across various media, Walt Disney Co. has bought the assets of CrossGen Entertainment, a comic book publisher whose fantasy and sci-fi titles include "Abadazad," "Mystic" and "Route 666." Terms were not disclosed. The acquisition of the more than two dozen titles comes as Disney is set to launch a TV series in the United States based on "W.I.T.C.H.," a comic magazine for tween girls that debuted in 2001 in Italy. Disney says "W.I.T.C.H." is now the fourth-largest magazine in the world in terms of international editions....