Made to ward off the Grim Captain and silence the lure of undeath.

Silent Gravestone

Cards in graveyards can't be the targets of spells or abilities.
{4}, {T}: Exile this artifact and all cards from all graveyards. Draw a card.

Rivals of Ixalan

Cards in graveyards can't be the targets of spells or abilities.
{4}, {T}: Exile Silent Gravestone and all cards from all graveyards. Draw a card.

Rivals of Ixalan Promos

Only spells and abilities that target cards in graveyards will be affected. Spells and abilities that affect cards in graveyards without targeting them (such as Extract from Darkness) can still affect those cards.

Silent Gravestone isn’t exiled until its activated ability resolves.