yvora, raised by the wild

+1: reveal the top three cards of your library and put any number of them into your hand. you lose life equal to their converted mana costs.
-3: put a creature card with converted mana cost 6 or less from your hand onto the battlefield.
-7: sacrafice x permenants. then for each permenant sacraficed this way, search your library for a permenant of that type, and put into your hand.