Shadowhand is built entirely on a foundation of muddy luck. Sometimes the cards come up in such a way that you can combo twenty or more in a row. Sometimes you have to pass your turn over and over again, waiting for a useful 7 or 5 to show itself. That's why I find it unsatisfying.
Assuming you can imagine using solitaire as the combat mechanic this is actually quite good and imaginative. Nice loot, good RPG progression and it's all intertwined with the solitaire game. Strange but makes the time pass.
ShadowHand takes an old game with a reputation for dullness, and dresses it up in an elegant Victorian English RPG coat. Somehow miraculously, it works really well. It isn't a reinvention of the wheel, but the sense of personality the game pack in addition to being simply fun definitely makes it worth the time and money.