Rhystic Study 
Enchantment
$67.20 #46 2.82 26.4 years
Whenever an opponent casts a spell, you may draw a card unless that player pays 
.
.Click a line or tag to filter
Cards similar to Rhystic Study 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.
Mystic Remora90%
$10.47↓#101↓1.60↓31.4 years↑
"Whenever an opponent casts a noncreature spell, you may draw a card unless that player pays 
."
."
Unifying Theory90%
$0.42↓#25528↓0.39↓25.1 years↓
"Whenever a player casts a spell, that player may pay . If the player does, they draw a card."
. If the player does, they draw a card."
Esper Sentinel87%
$48.16↓#80↓1.86↓5.5 years↓
"Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays 
, where X is this creature's power."
, where X is this creature's power."
Soul Barrier85%
$0.27↓#18032↓0.88↓31.4 years↑
"Whenever an opponent casts a creature spell, this enchantment deals 2 damage to that player unless they pay ."
."
Reparations84%
$4.70↓#22801↓0.20↓30.0 years↑
"Whenever an opponent casts a spell that targets you or a creature you control, you may draw a card."
Isolation Cell83%
$0.29↓#12718↓0.50↓15.4 years↓
"Whenever an opponent casts a creature spell, that player loses 2 life unless they pay ."
."
Hermit of the Natterknolls // Lone Wolf of the Natterknolls75%
$0.37↓#12330↓0.14↓10.5 years↓
"Whenever an opponent casts a spell during your turn, draw a card."
Chancellor of the Annex74%
$3.18↓#10165↓1.43↓15.4 years↓
"Whenever an opponent casts a spell, counter it unless that player pays ."
."
Mangara, the Diplomat74%
$0.36↓#610↓0.36↓6.3 years↓
"Whenever an opponent casts their second spell each turn, draw a card."
Silverquill Silencer74%
$0.19↓#24660↓0.44↓5.5 years↓
"Whenever an opponent casts a spell with the chosen name, they lose 3 life and you draw a card."
Kraum, Ludevic's Opus74%
$2.58↓#7032↓0.25↓9.9 years↓
"Whenever an opponent casts their second spell each turn, draw a card."
Forced Fruition72%
$2.77↓#2525↓0.93↓19.0 years↓
"Whenever an opponent casts a spell, that player draws seven cards."
Spelltithe Enforcer72%
$6.68↓#8731↓1.33↓20.7 years↓
"Whenever an opponent casts a spell, that player sacrifices a permanent of their choice unless they pay ."
."
Insight72%
$1.59↓#11158↓0.24↓29.0 years↑
"Whenever an opponent casts a green spell, you draw a card."
Ghostly Pilferer71%
$1.73↓#1425↓0.32↓6.3 years↓
"Whenever an opponent casts a spell from anywhere other than their hand, draw a card."
Horn of Plenty71%
$0.71↓#25298↓0.06↓27.0 years
"Whenever a player casts a spell, they may pay . If the player does, they draw a card at the beginning of the next end step."
. If the player does, they draw a card at the beginning of the next end step."
Aerial Extortionist70%
$4.54↓#2778↓0.30↓4.5 years↓
"Whenever another player casts a spell from anywhere other than their hand, draw a card."
Nether Void70%
$673.40↑#16326↓2.18↓32.4 years↑
"Whenever a player casts a spell, counter it unless that player pays 
."
."