So exactly how many cards is frontier justice supposed to contain?

Coz I think I just received a retail pack rather than an individual expansion…

Frontier justice contains 21 distinct cards and should have four of each card, for a total of 4x21=84 cards

Well, plus an extra 4x copies of Unprepared (errata).

Hope this helps!

Right! So, I’ve got 5 extra copies of frontier justice at no extra cost…

Plenty o’ goodies in them thar packs: