Sleeping Sentry sucks!
Of all the shadow cards that exist in the game, Sleeping Sentry is by far the most over-the-top piece of garbage available. "Shadow effect"- discard all exhausted CHARACTERS! Really? This is beyond lame FF. At least errata it to say "discard all exhausted allies" or "discard one exhausted hero if possible." My goodness, this card literally makes me quit every time it is pulled as a shadow card. I hate it, therefore, I will never play Road to Rivendell again. Please change some of these overpowered, silly, brainless, shadow effects. Come on, you get paid to develop card games, use your brains to dig a little deeper into more conditional effects.
My few thoughts. And by the way, I do sound a bit harsh because it is quite annoying to get very far in a scenario, to finally feel that you have the board set up quite nicely, only do find that all of your characters simply get discarded out of play and the game ends. I feel like I wasted a lot of time.