preferably you want to put out psychic surgery and cosi's trickster before playing any extraction cards. then start chipping away at key parts of their deck, and start taking their creatures with beguiler of wills.

fun thing to do: use tolarian entrance + nemesis mask to take all of their creatures all at once. :)

you have vedalken aethermage for search, and counterbore for some nasty countering. expensive to play yes, but it also doubles as an extraction card, essentially countering 4 cards for 5 mana. (5+ cards if you have out 1 or more psychic surgery.)

really the coolest card in the deck has got to be dichotomancy. let your opponent build up their creatures, and then have a mass extraction that takes a copy of each of those permanents from their library and gives them to you. :) need to find a way to made then attack you though... :(