Birthing Ritual Aetherdrift Whenever one or more land

Whenever one or more land cards are put into your graveyard from anywhere

Ward—Sacrifice three nonland permanents

When Emrakul leaves the battlefield

exile all creature cards from your graveyard

(You may cast a spell for its freerunning cost if you dealt combat damage to a player this turn with an Assassin or commander

Birthing Ritual Aetherdrift Whenever one or more landAt the beginning of your end step, if you control a creature, look at the top seven cards of your library. Then you may sacrifice a creature. If you do, you may put a creature card with mana value X or less from among those cards onto the battlefield, where X is 1 plus the sacrificed creature's mana value. Put the rest on the bottom of your library in a random order.