This deck is beast themed, with a few twists.
Krosan Warchief makes it much easier to cast beast cards from your hand.
Wirewood Savage and Ravenous Baloth are great smaller combos paired with Garruk, Primal Hunter, Primeval Bounty's first ability, and Rampaging Baloths landfall ability.
Worldly Tutor is in the deck to grab creatures you might want, and Long-Term Plans is in the deck for any other card you want to make sure you get. Fresh Meat is the card you should use if all of your creatures are board wiped, via Wrath of God, Supreme Verdict, etc. (Make sure to cast Fresh Meat at the end of the turn, and not in response to the board wipe).
This Deck can play very quickly, even with it's high casting costs, and will likely net a player many wins in early/mid game just on creatures alone. The deck really shines though when Primeval Bounty comes into play, and the earlier that happens, the better. which is the reason for the Sol Ring and Thran Dynamo.
The idea is simple: Primeval Bounty Comes into play. you by this time likely have a Nulltread Gargantuan on the battlefield, a Down / Dirty in your graveyard, or a Simic Growth Chamber on the field. The fun comes when you start cycling around any of these 3 cards with Primeval Bounty in play. For instance:
1.) You have a Wirewood Savage and Nulltread Gargantuan in play, and one more Gargantuan in your hand. You play the second Gargantuan, triggering Primeval Bounty, and the Wirewood Savage for the first time. a 3/3 token comes onto the battlefield, triggering The Wirewood Savage a second time. You draw a card, Place your first gargantuan on the top of your library, and draw it immediately from the first time you triggered the Wirewood savage. Rinse and repeat as your mana allows to Draw cards, and get 3/3 beast tokens.
2.) You have a Simic Growth Chamber in play, and another in your hand. Tap your Growth Chamber in play for it's land to play a spell, or possibly perform number 1. Then, after all is said and done, play your second Growth Chamber, Triggering the Primeval Bounty and gaining 3 life. when Simic Growth Chamber comes into play, return target land you control to your hand. Return the other Growth Chamber. This Also can Trigger Baloth Woodcrasher or Rampaging Baloths Landfall abilities, if they are in play.
3.) You have a Down / Dirty in your Graveyard, and one in your hand. Cast Dirty, Returning the Down / Dirty in the graveyard to your hand, and triggering Primeval Bounty, putting three +1/+1 counters on a creature you control. Cycle as you have mana to do so.
