Karametra EDH is designed to exploit all aspects of Karametra, God of Harvests. Take advantage of the fact that she's an enchantment, use Landfall in conjunction with casting of creatures to double her output, search out the lands to thin the deck, and my personal favorite, animate the lands and attack with them to maximize your board. It's important to note also that 1. you need to make an effort to protect your lands, which this deck does, and 2. Karametra's land trigger doesn't work on the first landfall creature you cast, since the land you search for must enter play before the creature spell resolves.

Please note that the breakdowns of this deck are somewhat deceptive. The deck contains 25 enchantments (commander included) and only 5 artifacts. It's also capable of producing 9 kinds of creature tokens.