Tomb of Heroes

{t}: Mill a card for each creature in your party.
(Your party consists of up to one each of Cleric,
Rogue, Warrior, and Wizard.)
{3}, {t}: Return a Cleric, Rogue, Warrior, or
Wizard creature card from your graveyard to the
battlefield. Activate only if there is a full party in
your graveyard. (There is a full party in your
graveyard if there is at least one each of Cleric,
Rogue, Warrior, and Wizard.)