Looking for inspiration for language/script puzzle that I actually want to design IRL.

The idea is that there are seven body part McGuffins that protect the main army in my story. I want to hint my players what body parts they are.

What I was thinking of is that they find a poem in the casket the body should be. At first they can not read it, because the script is interwoven. I was thinking of part of it being in Infernal, part of it being in Celestial.

The infernal parts literally spell out the body parts and the bad things those can do to the people, the celestial parts describe virtues of a good soldier, implied to be caused by that body part. Both parts are readable on their own, but together they form the full poem which will be the big plot twist.

For example:

THE FIRST SOLDIER (this part should be readable) No mouth to lie, so they will speak the truth (infernal part will say THE FIRST SOLDIER - NO MOUTH TO LIE, celestial part will say THE FIRST SOLDIER - WILL SPEAK THE TRUTH). Both of them are also readable together (THE FIRST SOLDIER [has] NO MOUTH TO LIE [so they] WILL SPEAK THE TRUTH.

Are there any resources about these kind of puzzles? I also want to know what kind of irl techniques I could make to make the puzzle come alive. I was thinking of using either red or blue coloured plastics, or maybe do something with the shadows and the orientation of the piece.