This is generally one of the better tarots.
Beat Cop costing 4 resources means that 3 for +1 is perfectly feasible, if the tarot is worth the expense even if you didn't get it for free, that's a good tarot.
A flex build might straight up upgrade beat cop to Ace of Swords and leave the ally slot for something else (Mr. "Rook", Dr. Milan Christopher, Art Student, Jessica Hyde, Alice Luxley, Leo De Luca, Agency Backup, all these come to mind). Meanwhile a full-on fighter might decide to have both Beat Cop and Ace of Swords for a persistent +2, which is obviously very strong but costly dedication to nothing but combat for the rest of the scenario.
Do get 2 copies, even if the second copy is dud the chance at getting it in the opening hand is worth 2 xp.