wHAT IS THE BEST EXPANCION OF THE EX SERIES
I Really think that unsen forces would be the best if it doesn't have unows
But think dragon froter is pretty good
I'd really have to say Unseen Forces. Almost every ex was incredibly good, well except for Ho-oh and maybe T-tar, plus it had some of the best exs: Lugia, Steelix, Espeon & Umbreon, plus it had Ariados as well.