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For ETH, you can use MyEtherWallet, MyCrypto or Coinomi (Android), they all supportthe bip39 passphrase.
Sadly MetaMask does not support the bip39 passphrase.
For Terra, apparently the only option is to use the terra-rust.exe command-line interface, see [https://agora.terra.money/t/urgent-25th-passphrase-with-terra-luna-only-for-nerds/2540/2](https://agora.terra.money/t/urgent-25th-passphrase-with-terra-luna-only-for-nerds/2540/2)