If the final phrase is something like: "only starman lawfully down able straw" — not coherent. Try: "only transam lawfully down able straw" — still odd.
The string tnzyl anstqram llayfwn bdwn abl stwr appears to be a sequence of lowercase words with no punctuation. Length and structure suggest it might be encoded with a simple substitution cipher (e.g., Caesar, Atbash, or keyed shift), or possibly a transposition cipher (e.g., columnar or rail fence). tnzyl anstqram llayfwn bdwn abl stwr
Here’s a possible write-up for that string, treating it as a cipher or puzzle piece. If the final phrase is something like: "only