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.
Djinn of Fool's Fall94%
$0.05↓#24081↓0.81↑2.4 years
"Plot "
castable-from-exile, exile-self, cheaper-than-mv
Grim Strider93%
$0.07↓#29381↓0.35↑9.4 years↑
"This creature gets -1/-1 for each card in your hand."
hand-size-matters, drawback
Dread Slag93%
$0.36↑#30949↓0.2720.3 years↑
"This creature gets -4/-4 for each card in your hand."