Option 1: Stall the game with walls in Wall of Denial, Shalai, Voice of Plenty and Shield Sphere. Ramp up with Batterskull, Gilded Lotus, Axebane Guardian etc. Play out Entreat the Angels or Decree of Justice to gum up the board. Have Mirror Gallery in play and go for the game with Mass Polymorph.
Option 2: Use Forbidden Alchemy to put Unburial Rites and Elesh Norn, Grand Cenobite or Iona, Shield of Emeria in the graveyard and bring either back to lock the opponent, almost always, out of the game. (black mana coming from Chromatic Lantern can allow you to hardcast Unburial Rites as well)
Things that help the deck: The life gain from Seraph Sanctuary allows the entreat the angels and the decree of justice to help the deck along and when Mass Polymorphing into a large amount of angels, Seraph Sanctuary will go over the top and put games away from your opponent.
Forbidden Alchemy helps for card selection in the deck and getting Mirror Gallery to hand is very important because it will turn on the Mass Polymorph win scenario. It is also preety fun to go turn 4 Mirror Gallery with Chromatic Lantern and play 2 Noble Hierarch as follow-up.
Lastly, the Zendikar tap lands that gain 1 life when they come into play allow you to have a play against mono red or jund. They also set up nicely with Wall of Denial to reduce the attacks.
