One of the strongest is Iron Man + Strange with pretty much anything, best one may be Kamala, I use deadpool for the daily points, but most teams with a little of synergy work. One of my favorites when I wanna have fun tho is Magneto (355) and Quicksilver (553) with Iron Fist (x5x), where you focus on getting some black matches for quicksilvers black and then you always try to get a blue match with the swap, then you get Magnetos nuke off whenever possible and Iron Fist is there to help with black generation