"I dont always win, but when I do, I prefer to win big. Stay thirsty my friends."
So many fun ways to win with this deck, which I accidently stumbled into in MTGO when M13/Innistrad phased out and Theros was not active. I've since added Sylvan Caryatid to help with the 3 color format.
On to the deck:First up, ramping with Elvish Mystic and Sylvan Caryatid. Basic stuff there.
Next, preparing to make massive counters. Corpsejack Menace, Vorel of the Hull Clade, and Master Biomancer all set the stage for ways of massive counter creation. In combination the counters go from annoying to massively threatening quickly.
Then, preparing to make those counters break through your opponent's defense is on the list. Lotleth Troll and Nimbus Swimmer have trample and/or flying, Witchstalker is hexproof to build counters on that are difficult for an opponent to destroy, and Vastwood Hydra makes a great way to bring in counters that will multply if/when your opponent takes it out. Put dying wish on a creature that you can keep alive or is already big in numbers and your opponents think carefully about killing it or boardwiping, which only buys you more time to make it fatal.
Fun ways to win with this deck:
Get Corpsejack Menace and/or Vorel of the Hull Clade out and any time you make counters you double them. Get multples of either and it's x4, x8, x16, etc... a Vastwood Hydra with as little as 2 counters becomes a beast by using one blue mana: Rapid Hybridization. That kills your own hydra and makes a 3/3 beast for you, while the 2 counters turns into 4 counters on another critter. Then use Vorel for 2 mana to turn those 4 into 12 (double the 4 for vorel, then those 4 double again for corpsejack). Do this on your opponents end step then on your turn use vorel again to turn the 12 into 24 more to make 36 counters on a critter. You can do the same using Bioshift as well to start the chain. Then numbers get even bigger if you start with 3 or 4 counters! You can plan to put the counters ending on on a creature with trample, flying, or Dying Wish if you wish to be especially cruel and gain life while the opponent sucks air when you Putrefy or Rapid Hybridization your own critter. Those two cards make for decent defense if needed, as well.
Spell Rupture on a counter making deck = cancel magic for two mana!
I have been happily surprised at how well this deck synergizes with so many options to adjust on the fly!