Maidhc O Casain
Na Bith Mo Riocht Tá!
Right, but Divine Challenge is one of those powers that specifically states that it Marks the opponent if it's successful.
I did a search (gotta love those searchable PDFs) and in every instance I found where a creature is described as being Marked it's within the description of a specific Power. I also read that a creature can only be affected by one Mark at a time - this doesn't necessarily mean that hitting an opponent doesn't Mark them, but it seems to argue against it ("I'm Marked by you . . . no wait, it's you . . . hang on a second, now it's you . . . oh, Jeez, who do I swing at?")
I did a search (gotta love those searchable PDFs) and in every instance I found where a creature is described as being Marked it's within the description of a specific Power. I also read that a creature can only be affected by one Mark at a time - this doesn't necessarily mean that hitting an opponent doesn't Mark them, but it seems to argue against it ("I'm Marked by you . . . no wait, it's you . . . hang on a second, now it's you . . . oh, Jeez, who do I swing at?")