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.
Tablet of the Guilds 100%
$0.38#9094
"As this artifact enters, choose two colors."
Herald of Kozilek 90%
$0.34#6014
"Colorless spells you cast cost {1} less to cast."
Ugin, the Ineffable 88%
$1.62#1060
"Colorless spells you cast cost {2} less to cast."
Skittering Cicada 83%
$13.21#3293
"You may cast colorless spells as though they had flash."
Paradise Plume 83%
$0.33#10748
"As this artifact enters, choose a color."
Caged Sun 83%
$3.59#891
"As this artifact enters, choose a color."
Prism Ring 83%
$0.36#8711
"As this artifact enters, choose a color."
Gauntlet of Power 83%
$4.26#2501
"As this artifact enters, choose a color."
Coldsteel Heart 83%
$2.05#2073
"As this artifact enters, choose a color."
Sol Grail 83%
#24382
"As this artifact enters, choose a color."
Jeweled Torque 83%
$0.24#30065
"As this artifact enters, choose a color."
Heraldic Banner 83%
$0.31#858
"As this artifact enters, choose a color."
Gonti, Canny Acquisitor 82%
$1.51#7924
"Spells you cast but don't own cost {1} less to cast."
Jet Medallion 81%
$10.83#272
"Black spells you cast cost {1} less to cast."
The Darkness Crystal 81%
$4.92#1293
"Black spells you cast cost {1} less to cast."
Mana Maze 80%
$4.75#17832
"Players can't cast spells that share a color with the spell most recently cast this turn."