Linguist

You have studied Languages and codes, gaining the following benefits:

Increase your Intelligence score by 1, to a maximum of 20.
You learn three Languages of your choice.
You can ably create written ciphers. Others can’t decipher a code you create unless you teach them, they succeed on an Intelligence check (DC equal to your Intel⁠ligence score + your proficiency bonus), or they use magic to decipher it.