Altar - Ancient One

+{0} Whenever an opponent attacks with a creature or uses its skill, deal x damage to its owner where x is the number of creatures or skills used that round.
+{1} Choose a card from your opponents hand, graveyard or deck and add it to your hand.
-{7} Until the end of the game, when your opponent plays a card it deals damage to him equal to its cost. Take that card and add it to your hand at the end of turn.