what are the rare smurfs?
['Praying Smurf & Smurfette.', 'Baseball Player Smurfette.', 'Smurf Surprise "Gargamel \'n\' the Box"', 'Christmas Smurfs - Smurf Rides Candy Cane & Wreath Smurf.', ' # 1 Grad Smurf.']