I know that brainwallets are a bad idea, but after using Electrum and the NXT client, I wonder if it would be possible to produce a strong brainwallet by using words from a made-up language.
A conlang (short for constructed language) is a language that is completely invented. An example of such a language is Klingon.
How secure would a passphrase similar to the above one be? It has about 120 characters and none of the words can be found in a dictionary. Shouldn't it be superior to a typical 12-word seed that Electrum and the NXT client provides since the latter two contain dictionary words, has no symbols or numbers, and is shorter in length?
I'm only asking because I would like to use a similar passphrase using a conlang that only I know but with a completely different set of characters to the one above.