Green Beastmaster Midrange

This deck plays very much like a mono green deck. However, there are a few key differences: Beastmaster, the midrange style, the lack of mobility tricks and the lack of reliance on Feed the Forest to be viable.

Just build forests to one side and push aggressively while keeping your Beastmasters safe in collection spots. Against rush, build forests to both sides, defend for a while and go aggressive whenever you get the opportunity. Note that you only need 3 forests to play all your cards, so don't be afraid to place double prairies to get your future forests closer to your opponent.

Mulligan: Beastmaster is easily one of your best cards in the mulligan, especially with another creature that has 5 life or more and is cheap enough to be able to play it on either the same turn or the following turn. You may choose to keep Ancient Boar if you also have Willow, Verduran Force or Wandering Monk. Verduran Force is good to keep too. Overall, Beastmaster is your top priority.

The only cards you don't usually want in your Mulligan are Kodama, Grove Guardian, Emperor's Command and a hand full of buffs.

I think this deck shares some, if not all weaknesses of a Green Beastmaster Control deck, with the possible additional weakness of other late-game decks. However, it tries to compensate via a surprising amount of healing, as well as a lot of bulky creatures that benefit from Beastmaster.