Rochnich, God Of Sacrifices

Flying, Trample, First strike, Deathtouch, Indestructible
If Rochnich, God Of Sacrifices enters the battlefield and was not casted from your hands or graveyard sacrifice it and loses 10 life.
At the beggining of each player's upkeep, sacrifice a creature. If you can't, sacrifice Rochnich, God Of Sacrifices and loses 10 life.
Whenever Rochnich, God Of Sacrifices deals combat damage to a player, that player sacrifice that many creatures.