Bip39. The passphrase will not be selected through the predefined list of 2048 words – it could be any word or phrase you end up picking. What constitutes a "fantastic wallet" is one which has distinct, very easy to obtain documentation on supported BIP expectations, derivation paths, and Restoration procedures. https://socialdummies.com/story3622258/bip-39-https-linktr-ee-bip39-bip39-wallet-fundamentals-explained