Bip39 Seed Generator. At first you'll want to store it Independently from the seed. Having your seed along with your passphrase in the same locale defeats the purpose of getting a passphrase to begin with. BIP39 specifies a list of 2048 words from which the mnemonic phrase is picked out. https://socialdummies.com/story3908813/bip39-passphrase-https-linktr-ee-bip39-5-simple-statements-about-bip39-mnemonic-explained