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.
Glorifier of Dusk 93%
$0.31#26984
"Pay 2 life: This creature gains vigilance until end of turn."
Adanto Vanguard 92%
$0.22#16393
"Pay 4 life: This creature gains indestructible until end of turn."
Shadowcloak Vampire 91%
$0.04#26046
"Pay 2 life: This creature gains flying until end of turn."
Arco-Flagellant 90%
$0.33#14327
"Pay 3 life: This creature gains indestructible until end of turn."
Protective Sphere 88%
$0.17#25348
"{1}, Pay 1 life: Prevent all damage that would be dealt to you this turn by a source of your choice that shares a color with the mana spent on this activation cost."
Koh, the Face Stealer 88%
$0.38#9984
"Pay 1 life: Choose a creature card exiled with this card."
Carrion Howler 87%
$0.16#25034
"Pay 1 life: This creature gets +2/-1 until end of turn."
M.O.D.O.K. 87%
$5.28#12077
"Pay 3 life: this card connives. Activate only during your turn."
Slaughter 83%
$6.35#14277
"Buyback—Pay 4 life."
Withering Boon 83%
$14.21#5200
"As an additional cost to cast this spell, pay 3 life."
Fumarole 83%
#29981
"As an additional cost to cast this spell, pay 3 life."
Toxic Deluge 82%
$3.21#67
"As an additional cost to cast this spell, pay X life."
Bond of Agony 82%
$1.54#14955
"As an additional cost to cast this spell, pay X life."
Fix What's Broken 82%
$0.29#11957
"As an additional cost to cast this spell, pay X life."
Hatred 82%
$62.82#7675
"As an additional cost to cast this spell, pay X life."
Fire Covenant 82%
$0.30#2779
"As an additional cost to cast this spell, pay X life."
Vicious Rivalry 82%
$0.30#10747
"As an additional cost to cast this spell, pay X life."
Necrologia 82%
#9369
"As an additional cost to cast this spell, pay X life."
Book of Rass 82%
#20405
"{2}, Pay 2 life: Draw a card."
Nihilistic Glee 80%
$0.25#26162
"{1}, Pay 2 life: Draw a card. Activate only if you have no cards in hand."