>>8
Good old blue creature-fuck card. I love that kind of stuff - presently my two best decks are my blue counterspell/unsummon deck, and my newer blue ninja deck. Pisses people off (especially those who play with really expensive creatures) to bounce them for a piddly one or two blue mana.

It's even more fun to cast a counterspell when they play that one (usually really lame and broken) card that makes their deck's "trick" go off. I can't tell you how satisfying it is to watch my opponent build up their carefully crafted trick to decisively win the game, while I sit on a bunch of counterspells. To make it even more delicious, grab some counterspells that let you discard or sacrifice to cast them - just in case your cocky opponent thinks he's got you covered by tapping or destroying all your islands.

\(^^)/ Hooray for blue!