As an alternative to storing entropy, store the mnemonic created in the entropy. Steganography can be advantageous when storing the mnemonic. The random mnemonic generator on this site uses a cryptographically safe random selection generator. The inbuilt random generator can commonly be trusted over your very own intuition about randomness. https://bookmarkpressure.com/story18918003/5-simple-techniques-for-bip39-word-list-pdf