Silent Gravestone 
Artifact
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.
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Cards that do something similar expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Underworld Cerberus 100%
$0.32#23664
"Cards in graveyards can't be the targets of spells or abilities."
Dennick, Pious Apprentice // Dennick, Pious Apparition 100%
$0.29#14948
"Cards in graveyards can't be the targets of spells or abilities."