Bip39 Storing entropy (which include trying to keep a deck of cards in a selected shuffled purchase) is unreliable as compared to storing a mnemonic. In lieu of storing entropy, keep the mnemonic generated within the entropy. Steganography could be beneficial when storing the mnemonic. This technique is Utilized in https://thegreatbookmark.com/story18572618/bip39-seed-list-the-definitive-guide-to-bip39-phrase