Hypersmurf
Moderatarrrrh...
Agent Oracle said:UJH translates to "Ice" or "the" or "but"... like i said, very few words. But your typical crypto points out frequency, so it's probably "the"
In your basic Letter-substitution, that becomes U = T, J = H, H = E.
Now, figure out whether those substitutions are random, or whether there's a pattern to U=T, J=H, H=E... and apply that same pattern to SGDTJX.
In short, it's a bad puzzle, since the players will look at it and agonize over it for far too long, bringing your gaming night to a screeching halt.
The gaming night will be coming to a screeching halt, but not because of the cipher's difficulty... it's because he specifically stated that the session will end with the cipher being provided to the players, and their decryption time ends as soon as the next session starts.
-Hyp.