Main win condition for the deck is to get a Dragon Throne of Tarkir equipped to a larger creature and go all out with your smaller ones. Genesis Hydra is the best way to get the throne, and Divination helps get it AND the Throne.
Second win condition is to put as much mana into Hydra Broodmaster for its tokens as possible, then going for an all out attack. Nykthos, Shrine to Nyx is the key way to get the needed mana for anything past Monstrosity 4, and Kiora's Follower is great at getting multiple uses of the shrine in one turn.
Last, but not least, is getting a Heroes' Bane to ridiculous strength, and get it trample somehow, through either Nylea, God of the Hunt in game 2 or 3, or get it buffed with the throne.
In an ideal world, the best outcome if to get a Mystic out turn 1, another mana dork out turn 2, then a Heroes' Bane or Hydra Broodmaster out turn 4.
Genesis Hydra is best cast in the deck at two times; When X can equal 4, or when it can equal 6. When it can equal 4, there is a chance to get more mana producers, and maybe even the Throne. At X=6, you can get out any non-land permanent.
Nylea's Disciple is in the main so I can recover any life lost from either not blocking, or taking damage from my pain lands in the early game, or gain a large amount of life in the late game.
