I have built only a few cards. So this is my first to publish here
There is a discussion about it in German DOMINION Forum: BŁndnis
It's interesting to see, how the game changes. Asper has made a few cards in German thread.
PS: i see that this is an old idea:http://forum.dominionstrategy.com/index.php?topic=7669.0
sorry, i didn't know about it.