Fervent Mastery 
Sorcery
$0.29 #12545 0.12 5.5 years
You may pay 
rather than pay this spell's mana cost.
rather than pay this spell's mana cost.If the cost was paid, an opponent discards any number of cards, then draws that many cards.
cost was paid, an opponent discards any number of cards, then draws that many cards.Search your library for up to three cards, put them into your hand, shuffle, then discard three cards at random.
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Cards similar to Fervent Mastery 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.
Gamble95%
$16.17↑#240↑0.71↑28.0 years↑
"Search your library for a card, put that card into your hand, discard a card at random, then shuffle."
Curse-Marred Demon92%
$0.69↑#147970.32↑0.0 years↓
"When this creature enters, search your library for a card, put it into your hand, shuffle, then discard a card at random."
Cool but Rude84%
$6.02↑#4396↑0.43↑0.6 years↓
"When this Class becomes level 3, search your library for a card, put it into your hand, shuffle, then discard a card at random."
+1 more matching line
Wild Research82%
$1.69↑#16348↓0.00↓25.4 years↑
"
: Search your library for an instant card and reveal that card. Put it into your hand, then discard a card at random. Then shuffle."
: Search your library for an instant card and reveal that card. Put it into your hand, then discard a card at random. Then shuffle."
Diabolic Tutor80%
$1.18↑#486↑0.47↑25.1 years↑
"Search your library for a card, put that card into your hand, then shuffle."
Demonic Tutor80%
$61.82↑#64↑1.61↑33.2 years↑
"Search your library for a card, put that card into your hand, then shuffle."
Reckless Handling80%
$0.33↑#2732↑0.193.4 years↓
"Search your library for an artifact card, reveal it, put it into your hand, shuffle, then discard a card at random. If an artifact card was discarded this way, this card deals 2 damage to each opponent."
Behold the Beyond78%
$0.99↑#130750.35↑10.5 years↑
"Discard your hand. Search your library for three cards, put them into your hand, then shuffle."
Demonic Collusion78%
$3.17↑#15503↓0.24↑20.0 years↑
"Search your library for a card, put that card into your hand, then shuffle."
Bringer of the Black Dawn78%
$1.00↑#149750.50↑22.4 years↑
"You may pay 
rather than pay this spell's mana cost."
rather than pay this spell's mana cost."
Razaketh's Rite78%
$0.34↑#103570.29↑9.3 years↑
"Search your library for a card, put that card into your hand, then shuffle."
Diabolic Revelation76%
$3.20↑#8738↑0.40↑14.3 years↑
"Search your library for up to X cards, put those cards into your hand, then shuffle."
Diabolic Intent76%
$15.13↑#275↑0.73↑25.7 years↑
"Search your library for a card, put that card into your hand, then shuffle."
Ingenious Mastery76%
$0.17↓#119100.055.5 years
"You may pay rather than pay this spell's mana cost."
rather than pay this spell's mana cost."
Verdant Mastery76%
$0.23↓#124440.185.5 years
"You may pay rather than pay this spell's mana cost."
rather than pay this spell's mana cost."
Rune-Scarred Demon76%
$1.20↑#1308↑0.43↑15.3 years↑
"When this creature enters, search your library for a card, put it into your hand, then shuffle."
Splinter's Technique75%
$1.72↑#5216↑0.37↑0.6 years↓
"Search your library for a card, put that card into your hand, then shuffle."
+1 more matching line
Emeritus of Woe // Demonic Tutor74%
$12.14↑#2850↑0.49↑0.5 years↓
"Search your library for a card, put that card into your hand, then shuffle."
Illicit Shipment72%
$0.24↓#104130.29↑4.5 years↓
"Search your library for a card, put it into your hand, then shuffle."
Demonic Bargain72%
$0.27↓#146390.39↑4.9 years
"Exile the top thirteen cards of your library, then search your library for a card. Put that card into your hand, then shuffle."