i was playing with my UWB piranhas lately
http://www.themanadrain.com/index.php?topic=35922.0, noticing that instead of swarming my opponent, i was more often forced into control mode and waiting for the right moment to attack, most of the time after disrupting the opponents mana base and/or hand.
a lot of times i found myself playing a Dimir, removing possible blockers and protect the thief for the win. so i listened to myself arguing "Pomaxx, if you are so one-dimensional and play it out that way, no matter what, why not adjust the deck? you rarely play a Grunt anyway, why not replace some cards?Remember 3 CC?"
the flexible brain i am, i did just that, keeping in mind what i want to keep and what to exchange.
basically i took the more controlish route and replaced some creatures (Katakis, Grunts, Mindcensors) with counters, control elements (Crucible) and minor draw (Skeletal Scrying and FoF).
//Mana
1 Island
1 Plains
1 Swamp
3 Underground Sea
3 Polluted Delta
3 Flooded Strand
3 Tundra
1 Strip Mine
3 Wasteland
1 Mox Jet
1 Mox Pearl
1 Mox Sapphire
1 Black Lotus
//Creatures
3 Cutpurses
2 Exalted
//Stuff
4 FoW
2 Mana Leak
2 Mana Drain
2 Daze
2 Duress
2 Thoughtseize
1 Echoing Truth
1 Vampiric Tutor
1 Demonic Tutor
1 Time Walk
1 Ancestral Recall
1 Will
1 Crucible
1 Vindicate
3 StP
3 Null Rod
1 Balance
1 Extirpate
1 Sekletal Scrying
1 Fact or Fiction
i found myself lacking double blue early quite often, especially when wastelands destroy a tundra or sea during the first turns. Mana Leaks helped to fix this problem. With the Null Rods and my own waste/strip supplements the Leaks act as a hardcounter during midgame most of the time. The Dazes i just tried out but after a few test runs they please me quite well with the overall mana denial theme of the deck. At worst they pitch to a Force later on. Having 3 different type of countermagic beside the untouchable FoW makes the counter base less vulnerable to Extirpates as well, which might be of minor importance, but still helps.
I wish i could support another Scying, but right now i dont know what to take out for that.
for the sideboard:
right now i included 12 cards, leaving three slots open. suggestions are welcome
3 Orims Chant
3 Kataki
2 Massacre
1 Moat
2 Extirpate
1 Sword