Your search for "Machine Man, Model X-51 751" revealed the following:
Machine Man, Model X-51 (Foil) (MSC) from Marvel Super Heroes Commander, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Carlos Dattoli Card Text:Whenever you cast a noncreature spell, put a +1/+1 counter on Machine Man and he gains...
Machine Man, Model X-51 (MSC) from Marvel Super Heroes Commander, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Carlos Dattoli Card Text:Whenever you cast a noncreature spell, put a +1/+1 counter on Machine Man and he gains flying...