This set is designed to be a foundation for building your own collection as well as a practical guide to the fundamentals of the game. Plus, it's the first Core Set since Beta to use all black-bordered cards.
Molimo's Might is a green theme deck. The "Molimo's Might" deck starts off a little slowly, but it finishes with a wallop. Early in the game, get as many Forests into play as possible. Rampant Growth and Civic Wayfinder are great ways to find more. Once you've got a bunch of lands out, you can play creatures that are just plain bigger than your opponent's creatures. Half a dozen of them have a power of 5 or more!