It wasn't much. He was in the mini-series itself he has an appearance at Magneto's ball with Lady Dorma, and I think Rogue knocks him over there. :sigh: The last issue? Maybe #6, since he appears on the cover.
He also had an appearance fighting Apocalypse, but I can't remember which tie-in that was in. The 'brochure' image I posted was from some appendix -- Secrets of HoM, IIRC. He shows up in flashback in Cap 10, and that's where we see his son. There was also an appearance in the follow up mini-series HoM Civil War, which showed him and Magneto and Prof X cutting a deal which gives the mutant leaders the support and tech to conquer the world and set up HoM. He was pretty insufferable. Or at least Magneto thought so. LOL!