I don't know much about Vandal Savage (Hasn't he undergone some retcons?), but I read that him and Wally used to be major enemies and that he was quite active in his book after Post Crisis. Were there any real good or standout encounters? I read that Vandal is or was very sadistic and evil. I do like what I read of/from the character, so I am interested in reading about his rivalry with Wally. Thanks.