Mephisto, Lord of Hatred

When Mephisto enters play, return a creature
from your graveyard to play. Lose 4 life.
{t}{b}{r}: Put a 4/1 Shade of Mephisto token
into play. It can't be blocked, and is sacrificed at
the end of your turn.
Creatures your opponent controls enter your graveyard when they die.
When Mephisto dies, shuffle into your
library. Draw a card.
The righteous shall fall before the wicked