Sanctum of Undeath

Sanctum of Undeath enters the battlefield
tapped.
{t}: Add {w}{b}.
When a non-token creature you control is put
into the graveyard, create a 1/1 white and black
spirit creature token with flying.
Spirits you control get +1/+1 and vigilance.
{5}{w/b}, {t}, Exile Sanctum of Undeath: Shuffle
your graveyard into your library.