Cujo, Egostic Fool

{ut}: An opponent places the top 7 cards of your library in a row facedown in front of you. Starting with the card furthest to your left, you may choose to pay up to 7 life for each card placed facedown this way. Then starting with the card furthest to your left, reveal it. If the mana cost of the revealed card is less than or equal to the amount of life lost for it, until end of turn you may cast it without paying its mana cost and as though it had flash. If a card revealed this way is not cast b