Deathcasting Lich

Eternal {2}{b} (If Deathcasting Lich would be put into your graveyard from anywhere, you may put it at the bottom of your library instead. You may pay {2}{b} to put it on top of your library instead.)
When Deathcasting Lich leaves the battlefield, create a 2/2 black Zombie creature token.
{t}: Sacrifice Deathcasting Lich; add {b}{b} to your mana pool.