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.
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Fog of Gnats 100%
$0.18#22201
"{B}: Regenerate this creature."
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Drudge Reavers 100%
$0.08#26813
"{B}: Regenerate this creature."
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Spined Fluke 100%
$0.25#27912
"{B}: Regenerate this creature."
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Lotleth Troll 100%
$0.31#14361
"{B}: Regenerate this creature."
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Twisted Abomination 100%
$0.22#12787
"{B}: Regenerate this creature."
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Chilling Apparition 100%
$0.27#26227
"{B}: Regenerate this creature."
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Darkling Stalker 100%
$0.11#27793
"{B}: Regenerate this creature."
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Will-o'-the-Wisp 100%
$0.25#16877
"{B}: Regenerate this creature."
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Tattered Drake 100%
$0.07#31084
"{B}: Regenerate this creature."
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Phyrexian Monitor 100%
$0.14#28901
"{B}: Regenerate this creature."
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Kathari Remnant 100%
$0.21#20911
"{B}: Regenerate this creature."
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Mortivore 100%
$0.45#5263
"{B}: Regenerate this creature."
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Spectral Lynx 100%
$0.18#28799
"{B}: Regenerate this creature."
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Kjeldoran Dead 100%
#21826
"{B}: Regenerate this creature."
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Drowned 100%
#29711
"{B}: Regenerate this creature."
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Dutiful Thrull 100%
$0.03#28157
"{B}: Regenerate this creature."
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Metathran Zombie 100%
$0.13#29710
"{B}: Regenerate this creature."
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Rakdos Ringleader 100%
$0.12#25509
"{B}: Regenerate this creature."
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Skeletal Wurm 100%
$0.31#22312
"{B}: Regenerate this creature."
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Drudge Skeletons 100%
$0.44#17906
"{B}: Regenerate this creature."