Of course, building a deck can be challenging too. You'll need to think about things like mana curves and card advantage. And then there are all these little details, like how many copies of a card you should include, or whether you should play more-aggressive or more-controlling. But that's all part of the fun - it's like solving a big puzzle!
How To Build A Mtg Deck Mana Curve at Sybil Campbell blog
