Colors and Card Draw Blue is by far the easiest color for card draw
This is mostly used to determine the card frame that your card appears in
When you cast this spell, target opponent exiles the top four cards of their library, then you may put any number of land cards that player owns from exile onto the battlefield under your control. Because it considers all exiled cards, this means that casting this after some of the other cards on this list will get you a lot more than just the four cards it hits on its own
While youre paying life, you can build up Font of Agonies for great board control
Preeminent Captain ($1 to $15) Its a cheater of a card, especially because some of the truly busted Soldiers are hard on the mana, but here you go, dropping them into play, permanently, for the low cost of an early attack
The original Innistrad block, in comparison, had a DFC slot, so every booster had one