The monster behaves automatically as follows:
• It starts the game on the battlefield on its front side.
• It doesn't attack until it has taken a number of turns equal to its mana value.
• It attacks you on each of its turns after it's able to attack.
• The first time it leaves the battlefield for any reason, return it to the battlefield transformed. It can't transform by any other means. (It now attacks during each of its turns regardless of if it could attack before it transformed.)
• If it leaves the battlefield for any reason while transformed, it is defeated.
Take turns with the monster, performing its actions for it.
Though you cannot attack the monster, you can block with your creatures when it attacks, and you can target it with spells that target any creature or a creature your opponent controls.
You lose if your life total reaches 0 or if you attempt to draw a card from an empty library.
TO WIN:
Defeat the transformed monster to win.