User blog comment:B214/Question and Answers/@comment-108.17.150.138-20130806124428/@comment-180.194.30.221-20130806174107

It is safe to assume that Rias may develop new technique/s that may resemble a dragon just like Akeno's new move.

But as of now, there is no such thing in Rias' repertoire.. her newest move is a move that amplified the power of destruction to the point where it will destroy anything completely without a single trace left.