Shipwreck Salvages

Play this land only if you have played an instant
or sorcery from your graveyard this turn.
{t}: Add {u} or {b} to you mana pool.
{2}{u}{b}, {t}, Sacrifice Shipwreck Salvages: Search
your library for a card. Shuffle your library, then
put that card on top.
If an effect would cause you to exile a card with Gravepact from your graveyard, you may exile Shipwreck Salvages instead.