Would Prayers or Sacraments Be Valid in a Fictional Language Like Elvish?

Would prayers or sacraments be valid in a fictional language like elvish? He qua s elvish is unique because it's a functioning language with grammar and syntax, not merely gibberish. You don't need to verbalize a prayer for it to be valid. God can still respond to it. If you have a language, whether it's a private language that only you speak, or it's got a small community of language users, it's god knows what you're saying,. And so you knowhe can answer your request. The Holy See will only approve translations into major languages.