(Conforme um cerco entra no campo de batalha, escolha um oponente para protegê-lo. Você e outros podem atacá-lo. Quando ele for derrotado, exile-o e depois conjure transformado. )
Quando Invasão de Ravnica entrar no campo de batalha, exile a permanente não de terreno alvo que um oponente controla que não seja de exatamente duas cores.

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)
When Invasion of Ravnica enters the battlefield, exile target nonland permanent an opponent controls that isn't exactly two colors.
Whenever you cast a spell that's exactly two colors, look at the top six cards of your library. You may reveal a card that's exactly two colors from among them and put it into your hand. Put the rest on the bottom of your library in a random order.