Where Salamo Were Slaughtered

Each artifact card in your graveyard has escape.
The escape cost is equal to the card's mana cost
plus exile 4 other artifacts from your graveyard.
Whenever an artifact would return from your
graveyard to the battlefield, you may put it into
your hand instead.
Exile 1 artifact from your graveyard: Add {c}.
{t}: Add {c} or {w}.