Concept is pretty simple:
Super efficiently costed creatures to quickly swarm the board with high-quality creatures to shut-down aggro and beat-out Control.
Ramp: 4 each of Elvish Mystic and Sylvan Caryatid. Mystic has the advantage of being a 1-drop, Caryatid has the advantage of being a pretty good speed-bump to aggro and hexproof to avoid any burns/bounces.
Efficient Beaters: 4 each of Fleecemane Lion , Loxodon Smiter. At 2 and 3 cost respectively these guys exude power. Both can out perform the aggro decks creatures in terms of quality and each has a nice edge vs. Control. Loxodon can't be countered and Fleecemane threatens going Monstrous leading to nigh-impossible to deal with.
Voice of Resurgence: 4 each of Voice of Resurgence . This guy (elk?) get its own category because it's that good. Shuts down Aggro and Control and lets you have your phase to yourself.
Bombs: 4 each of
Kalonian Hydra
and Archangel of Thune . These guys can end the game in 1 or 2 turns after hitting play and it's VERY possible that they can land on turn 3. I ran 8 total because with the ramp I have I want to be able to consistently get these guys out on T3 or T4. Might consider cutting down to 3 and 3 to put in 2 Advent of the Wurm.
Defenses: 4 each of Selesnya Charm and Rootborn Defenses. My beaters will win if they can just stay alive! Selesnya charm is great for the token the giant growth and the EXILE. Rootborn defenses may be overloaded but I HATE getting board wiped... I would LOVE to get supreme verdicted.. make a Voice-token, populate, then gain indestructble. I love this idea so much I'm willing to run 4 :D