I'm currently playing -1 Wipe Away -1 Fire/Ice for two Counterpsells.
I'm reluctant to take out Rushing river since it win games by itself. The truth is counterspells give quite a bit of stability lategame.
Fire/Ice is the kind of card that makes you win against a random deck which you're likely going to face. It is, however, a far too limited tool against many DtB so playing 4 copies is a bit excesive.