You need counters for Dominions in your deck

 Just a heads up for everyone. I am currently playing Dominion, and the amount of freewins I get is incredible. Not a diss to my opponents, it's just they have such a thin rope to walk to win. All this because of Dominions bonus.
So keep this in mind when building your deck : if you don't have good options to stop Dominions during turn 3 and 4. You expose yourself to loosing to all Dominions players.