Grave-Culler Demon

Flying
{1}{b}{b}, Reveal Grave-Culler Demon from your
hand: Create a 0/1 black Cleric creature token.
When Grave-Culler Demon enters the
battlefield, each player may sacrifice any number
of creatures. Each player draws X cards and each
opponent loses X life, where X is the amount of
creatures they sacrificed this way.