Zlatosheth, The Reanimator

When Zlathosheth, The Reanimator enters the battlefield target player loses X life and you gain
X life X being the number of cards in your hand
and graveyard.
{t},{2}: Each opponent sacrifices a creature or
loses 2 life place X 2/2 black zombie token
creatures onto the battlefield.
When Zlathosheth, The Reanimator leaves the battlefield you may return a target creature
card from your graveyard to the battlefield.