I used the Flashcard to get me through to anti 3 where both the photograph and brainstorm are in the shop, if you dont have overstock just reroll the shop once after you get photograph and brainstorm will be there. Then look out for a hermit taro card in the base shop, sock is in that shop, once again if you dont alrady have overstock buy and use the hermit and reroll the shop till you get sock (I believe it only needs 1 or 2 rolls)