Thorn of Amethyst 
Artifact
$0.60 #6689 1.26 19.0 years
Noncreature spells cost 
more to cast.
more to cast.Click a line or tag to filter
Cards similar to Thorn of Amethyst expected a card that isn't here?
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.
Glowrider100%
$1.21↑#15385↓0.93↓23.7 years↑
"Noncreature spells cost more to cast."
more to cast."
Thalia, Guardian of Thraben98%
$0.43↓#2384↑1.08↓14.7 years↓
"Noncreature spells cost more to cast."
more to cast."
Vryn Wingmare97%
$0.18↓#8447↓1.00↓11.3 years↓
"Noncreature spells cost more to cast."
more to cast."
Thalia, the Survivor96%
$0.20↓#17399↓0.72↓0.0 years↓
"Noncreature spells your opponents cast cost more to cast."
more to cast."
Feroz's Ban90%
$0.35↓#21513↓1.3431.1 years↑
"Creature spells cost more to cast."
more to cast."
Charitable Levy88%
$0.21↓#70910.67↓2.3 years↓
"Noncreature spells cost more to cast."
more to cast."
Sphere of Resistance85%
$9.90↑#8502↓1.55↑28.3 years↑
"Spells cost more to cast."
more to cast."
Geist-Fueled Scarecrow83%
$0.16↓#25418↓0.53↓10.2 years↓
"Creature spells you cast cost more to cast."
more to cast."
Elspeth Conquers Death82%
$0.62↑#3123↑0.40↓6.7 years↓
"Noncreature spells your opponents cast cost more to cast until your next turn."
more to cast until your next turn."
Squeeze78%
$0.41↓#26413↓1.2227.0 years↑
"Sorcery spells cost 
more to cast."
more to cast."
Lodestone Golem77%
$0.30↓#72500.75↓16.7 years↓
"Nonartifact spells cost more to cast."
more to cast."
Alabaster Leech76%
$0.38↓#24961↓0.56↓26.0 years↑
"White spells you cast cost 
more to cast."
more to cast."
Defense Grid76%
$7.15↑#1923↑1.2527.7 years↑
"Each spell costs more to cast except during its controller's turn."
more to cast except during its controller's turn."
Sapphire Leech76%
$0.32↓#28548↓0.19↓26.0 years↑
"Blue spells you cast cost 
more to cast."
more to cast."
Jade Leech75%
$0.23↓#31667↓0.00↓26.0 years↑
"Green spells you cast cost 
more to cast."
more to cast."
Sanctum Prelate75%
$0.69↑#9798↓1.2210.1 years↓
"Noncreature spells with mana value equal to the chosen number can't be cast."
Arachne, Psionic Weaver74%
$0.30↓#11300↓0.81↓1.1 years↓
"Spells of the chosen type cost more to cast."
more to cast."
Reidane, God of the Worthy // Valkmira, Protector's Shield73%
$0.41↓#64420.53↓5.7 years↓
"Noncreature spells your opponents cast with mana value 4 or greater cost more to cast."
more to cast."
Gaddock Teeg73%
$0.63↑#9576↓1.57↑19.0 years
"Noncreature spells with 
in their mana costs can't be cast."
in their mana costs can't be cast."
Mai, Scornful Striker73%
$1.23↑#4889↑0.59↓0.9 years↓
"Whenever a player casts a noncreature spell, they lose 2 life."