I started by searching for the word "search" in text. and determined a good combination of colors for what I wanted. I later found that I had to pare that down a bit below the levels to sustain a deck and searched for "exile" cards. The 1-spot was weak, so I went to a couple of standby cards there to give me some life gaining and defense. As the deck came together, I found I could quickly cut down an opposing deck's non-land holdings pretty quickly. with the ability to exile cards in play, I can manage some creature management. The 23/7/5/4, which averages only 1.74, would seem an odd choice for a deck that takes 21 mana (for me, anyway), but the more expensive cards are so crucial to driving long-term success, I had to make that change.