So an hour ago, I got 5 dices and opened E.F.F.’s word list, and generated a random five word passphrase(all letters small with spaces, no punctuation).
The words were making up a meaningful scene in my mind, so I made a complete sentence out of the words by adding some more words(like of, from, a, etc.) and punctuation. Now I am not able to decide that which of the following thoughts is more dominant:
BENEFIT: I got some punctuation, a single capital letter and more words. So “strength” of passphrase should increase.
DRAWBACK: The virgin passphrase was quite random(non-sense), but the new sentence has got appreciable “real-world” meaning(sense) to it. It looks like a spam message generated by the method mentioned in THIS answer.
USECASE: This passphrase will be used for logging into my P.C.