I dont play them very often because attacking isnt my style, but that really just serves to demonstrate that they are more niche than many assume
But, to bury the lede, the card you want in this set is Sheoldred, the Apocalypse
There are many expensive Dimir cards in Gatecrash and although your opponents could be blown away by drawing Gruul cards, they may also be playing Boros
These give you the option of playing additional lands during your turn
Fire-Rim Form I'm not super high on this or anything, but it is worth noting that this can be a neat trick for Bogles decks to deal with Echoing Truth matchups
But dont get confused between judge promos and championship deck cards , which have gold borders and a different reverse side