The Hive Mind

1.do effects 2, 3, 4, and 5 and each opponent sacrifices a non tyranid non land permanent.
2.Creatures opponents control becomeTyranids in addition to their other types.
3.All Tyranids gain one +1/+1 counter then double all counters on all permanents.
4.Each Tyranid in play deals damage equal to half its power rounded up to its controller.
5.The Hive Mind gains life for each counter on opponent's permanents.
6. no effect.