Bip39 Mnemonic Generator. Before everything it is best to store it SEPARATELY from the seed. Owning your seed and your passphrase in a similar location defeats the goal of having a passphrase in the first place. BIP39 specifies a list of 2048 words from which the mnemonic phrase is picked. https://worldlistpro.com/story20844506/bip39-generator-https-linktr-ee-bip39-bip39-wallet-fundamentals-explained