Michael the Eldest Archangel

When Michael the Eldest Archangel enters the battlefield opponents must sacrifice {x} creatures. Put{x} +1/+1 counters on Michael.Flying, Lifelink,Vigilance, Double Strike, protection from instants.when Michael attacks, defending player loses 5 life.{t}{5}target opponents lose the top{x} library cards{t}{w} and regenerate Michael.