Compulsive Research 
Sorcery
$0.05 #4385 0.28 20.9 years
Target player draws three cards. Then that player discards two cards unless they discard a land card.
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Cards similar to Compulsive Research 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.
Thirst for Discovery88%
$0.33↑#37360.14↓4.8 years↓
"Draw three cards. Then discard two cards unless you discard a basic land card."
Thirst for Identity84%
$0.26↑#10738↓0.00↓0.6 years↓
"Draw three cards. Then discard two cards unless you discard a creature card."
Mystic Meditation84%
$0.06↑#25628↓0.00↓11.4 years↓
"Draw three cards. Then discard two cards unless you discard a creature card."
Thirst for Meaning81%
$0.16↑#8113↓0.00↓6.6 years↓
"Draw three cards. Then discard two cards unless you discard an enchantment card."
Winternight Stories80%
$1.28↑#5963↓0.15↓1.4 years↓
"Draw three cards. Then discard two cards unless you discard a creature card."
Thirst for Knowledge80%
$0.13↑#2028↑0.09↓22.9 years↑
"Draw three cards. Then discard two cards unless you discard an artifact card."
Opportunity78%
$0.09↑#14839↓0.43↑27.6 years↑
"Target player draws four cards."
Allied Strategies78%
$0.16↑#21677↓0.2025.6 years↑
"Target player draws a card for each basic land type among lands they control."
Braingeyser78%
$16.53↑#11564↓0.3033.1 years↑
"Target player draws X cards."
Overflowing Insight76%
$0.32↑#11712↓0.198.9 years↓
"Target player draws seven cards."
Wistful Thinking75%
$0.10↑#24587↓0.13↓19.6 years↓
"Target player draws two cards, then discards four cards."
Careful Consideration75%
$0.12↑#14323↓0.00↓19.9 years
"Target player draws four cards, then discards three cards. If you cast this spell during your main phase, instead that player draws four cards, then discards two cards."
Secret Rendezvous73%
$0.27↑#1130↑0.225.4 years↓
"You and target opponent each draw three cards."
Forget72%
$0.32↑#26217↓0.07↓30.9 years↑
"Target player discards two cards, then draws as many cards as they discarded this way."
Stroke of Genius72%
$0.23↑#35540.16↓28.7 years↑
"Target player draws X cards."
Inspiration72%
$0.07↑#20361↓0.2329.6 years↑
"Target player draws two cards."
Thoughtflare72%
$0.11↑#19962↓0.65↑13.9 years↓
"Draw four cards, then discard two cards."
Prying Eyes72%
$0.07↑#22970↓0.247.6 years↓
"Draw four cards, then discard two cards."
Laquatus's Creativity71%
$0.32↑#21723↓0.50↑24.9 years↑
"Target player draws cards equal to the number of cards in their hand, then discards that many cards."
Harrowing Journey71%
$0.17↑#24851↓0.67↑14.6 years↓
"Target player draws three cards and loses 3 life."