Vecna's Hall

The Disinter keyword ability of creatures you
control costs {1} less to activate.
{t}: Add {b}{b}.
{2}{b}{b}, {t}, sacrifice a creature: Creatures you
control have Disinter {b} until the start of your
next turn. (When this creature is sent to a graveyard,
you may pay its Disinter cost. If you do, return it to
the battlefield tapped. It is a Zombie in addition to its
other types.)