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.
Rollick of Abandon99%
$0.04↓#296990.2912.3 years↓
"All creatures get +2/-2 until end of turn."
flowstone, removal-toughness, sweeper
Languish94%
$0.34↑#5680↑0.1911.1 years↓
"All creatures get -4/-4 until end of turn."
removal-toughness, symmetrical, sweeper
Infest94%
$0.13↓#21635↑0.05↓23.9 years↓
"All creatures get -2/-2 until end of turn."
removal-toughness, symmetrical, sweeper
Nausea94%
$0.03↓#17556↑0.00↓28.2 years↑
"All creatures get -1/-1 until end of turn."
removal-toughness, symmetrical, sweeper
Shrivel94%
$0.10↓#18243↑0.2416.4 years↓
"All creatures get -1/-1 until end of turn."
removal-toughness, symmetrical, sweeper
Toxic Deluge90%
$4.49↑#67↑0.87↑12.8 years↓
"All creatures get -X/-X until end of turn."
removal-toughness, symmetrical, sweeper
Night of Souls' Betrayal90%
$2.02↑#10440↑0.91↑21.9 years↓
"All creatures get -1/-1."
removal-toughness, symmetrical, sweeper
Kaervek, the Spiteful90%
$0.28↑#9999↑0.386.2 years↓
"Other creatures get -1/-1."
removal-toughness, symmetrical, sweeper
Flowstone Surge90%
$0.19↑#287480.00↓26.6 years
"Creatures you control get +1/-1."
flowstone, power-boost-to-all
Drag to the Bottom89%
$0.06↓#21276↑0.07↓4.0 years↓
"Each creature gets -X/-X until end of turn, where X is 1 plus the number of basic land types among lands you control."
removal-toughness, symmetrical, sweeper
Final Revels88%
$0.16↑#311540.06↓18.9 years↓
"• All creatures get -0/-2 until end of turn."
removal-toughness, symmetrical, sweeper
Blight Grenade86%
$0.38↑#12213↑0.05↓3.9 years↓
"All creatures get -3/-3 until end of turn."
removal-toughness, sweeper, removal-creature
Hideous Laughter86%
$0.20↑#252020.3021.9 years↓
"All creatures get -2/-2 until end of turn."
removal-toughness, symmetrical, sweeper
Planar Despair85%
$0.16↑#294230.12↓25.3 years↓
"All creatures get -1/-1 until end of turn for each basic land type among lands you control."
removal-toughness, sweeper, removal-creature
Sulfur Elemental83%
$0.11↓#303010.18↓19.6 years↓
"White creatures get +1/-1."
flowstone, removal-toughness, sweeper
Withering Curse82%
$1.38↑#10534↑0.00↓0.4 years↓
"All creatures get -2/-2 until end of turn."
removal-toughness, symmetrical, sweeper
Mephitic Vapors81%
$0.11↓#20591↑0.367.9 years↓
"All creatures get -1/-1 until end of turn."
removal-toughness, sweeper, removal-creature
Biting Rain80%
$0.12↓#15523↑0.3810.4 years↓
"All creatures get -2/-2 until end of turn."
removal-toughness, symmetrical, sweeper
Hazardous Conditions80%
$0.05↓#287180.389.9 years↓
"Creatures with no counters on them get -2/-2 until end of turn."