I expect this is not an original idea, but it's my take on a card that takes victory cards from opponents.
Soldiers: Action-Attack. Cost 4
Each other player trashes a Victory card from his hand, or reveals and discards a hand with no Victory cards, and draws back up to the same hand size. You gain the trashed cards, putting them on top of your deck.
Card Mockup:
http://nosro.net/images/soldiers.jpgI've tried to keep within in the spirit of Dominion, in that it's a non-political attack against all opponents. It's a rough adaptation from the Thief card (and RiotNrrrd helped me past a roadblock with his simple Siege idea:
http://boardgamegeek.com/thread/426742/card-ideas).
I wish I was able to program this into a simulator to get some accurate data. I vastly underestimated how difficult it would be to make a card for this game. I'm not sure I have it right, yet, but I've tried to test it enough to make it worthwhile to share.
Stealing a Victory card is a brutal attack, which puts you ahead while at the same time hurting your opponent; so gaining even a Duchy swings the game 6 points in your favor. On the other hand, this is basically a dead card if you miss. So it's usually a late game card, best played when you have a reasonable chance of scoring a hit. Timing is the key.
The card is not expensive at 4 coins, but the double penalty of forcing you to gain all trashed Victory cards indiscriminately onto the top your deck is what really limits it. Playing the card early will only help your opponents by taking their Estates, much like trashing their Coppers with the Thief.
The alternate effect of cycling your opponent's deck when they have no Victory cards was a late addition. With this, multiple soldiers will eventually grind through a deck to find those Victory cards. Without it, the card could run into a complete dead end and was much less fun to play.
I expect some people will find the card annoying in a similar way to Smugglers or Possession, in that it allows you to cheaply reap the benefits of other successful decks which have gained their Victory cards the hard way. However, I find the new strategies introduced with this card are interesting, particularly in finding ways to deal with an opponent playing Soldiers. Certain cards synergize with it, like mixed type Victory cards, and others work against it, like VP generators. I have found that no matter what's on the table there are two general strategies which will absolutely defeat a deck built solely around Soldier. I'll let you discover these yourself. I don't think these counter strategies make the card useless, because then the threat of Soldiers to drive your opponent's strategy can also be a useful bluff or feint.
Thanks for your thoughts and please let me know what your experiences playing with it are.
(I've also posted this on BGG - hoping to get as much feedback as possible)