Embodiment of Undeath

At the beginning of the Horde's upkeep, roll a D6:
1- Each opponent sacrifices a creature.
2- An opponent loses 10 life.
3- Create thirteen 2/2 black zombie tokens.
4- Unearth all creatures in a random graveyard.
5- Embodiment of Undeath gains flying, trample, and deathtouch until end of turn.
When Embodiment of Undeath enters, the Horde gains 100 life and Embodiment of Undeath can't leave until the Horde's life is 0 or less.