This is another of those things that I've wanted to make for a while (as I've done similar things in the past) and I wanted this one to be as versatile as possible, and also have miniature versions that could be used on the tabletop...
...and, as you can see, it's a fairly simple design, and there are lots of different words that you can make - so it could potentially be used more than once.
Furthermore, I've also tied it to one of this months VTT maps (as you might have seen in the video)...
...and I actually got to use the puzzle in my online game last weekend:
Anyway, if anyone is interested, here's some of the riddles that I had lined up (though in my game the players managed to get through the door on their second attempt):
Never foremost, but enduring.
I lie upon the shore, and fall to measure time.
I can shroud both land and sea. A veil before thine eyes.
I have no voice when I'm at rest, and my rings cannot be worn.
My waves are not of the sea, my grip is not of fear.
In the dark I linger. In the light I wane.
In thy mind I haunt thee. Thy courage I will drain.