Death's Approach {B}
Enchantment — Aura
Enchant creature
Enchanted creature gets -X/-X, where X is the number of creature cards in its controller's graveyard.
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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.
Disturbing Conversion 97%
$0.17#21250
"Enchanted creature gets -X/-0, where X is the number of cards in its controller's graveyard."
Spontaneous Mutation 96%
$0.10#20486
"Enchanted creature gets -X/-0, where X is the number of cards in your graveyard."
Fear of Death 96%
$0.20#22421
"Enchanted creature gets -X/-0, where X is the number of cards in your graveyard."
Kagemaro's Clutch 88%
$0.16#30130
"Enchanted creature gets -X/-X, where X is the number of cards in your hand."
+1 more matching line
So Tiny 82%
$0.08#24447
"Enchanted creature gets -2/-0. It gets -6/-0 instead as long as its controller has seven or more cards in their graveyard."
+1 more matching line
Precipitous Drop 82%
$0.19#15205
"Enchanted creature gets -2/-2. It gets -5/-5 instead as long as you've completed a dungeon."
+1 more matching line