Prophesied Oblivion

When Prophesied Oblivion enters the battlefield,
you may destroy target creature. If a creature
was destroyed this way, its controller loses 3 life
and gains control of Prophesied Oblivion.
{x}, Sacrifice Prophesied Oblivion: Return target
creature card with mana value X or less from
your graveyard onto the battlefield. Activate
only as a sorcery.