Borrowed Knowledge 
Sorcery
$0.20 #12722 0.06 0.5 years
Choose one —
• Discard your hand, then draw cards equal to the number of cards in target opponent's hand.
• Discard your hand, then draw cards equal to the number of cards discarded this way.
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Cards similar to Borrowed Knowledge 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.
Umaro, Raging Yeti88%
$0.21↑#124290.001.4 years
"• Discard your hand, then draw four cards."
Tolarian Winds87%
$1.00↑#3114↑0.38↑28.0 years↑
"Discard all the cards in your hand, then draw that many cards."
Knollspine Dragon87%
$0.38↑#4503↑0.24↑18.5 years↑
"When this creature enters, you may discard your hand and draw cards equal to the damage dealt to target opponent this turn."
Change of Fortune86%
$0.47↑#5677↑0.064.9 years↑
"Discard your hand, then draw a card for each card you've discarded this turn."
Heartwarming Redemption86%
$0.25↑#120090.057.5 years↑
"Discard all the cards in your hand, then draw that many cards plus one. You gain life equal to the number of cards in your hand."
Drastic Revelation86%
$0.12↓#27875↓0.0017.5 years↑
"Discard your hand. Draw seven cards, then discard three cards at random."
Shattered Perception86%
$0.28↑#136360.0614.7 years↑
"Discard all the cards in your hand, then draw that many cards."
Narset, Jeskai Waymaster86%
$0.21↑#120700.21↑1.5 years↑
"At the beginning of your end step, you may discard your hand. If you do, draw cards equal to the number of spells you've cast this turn."
Collective Defiance82%
$0.20#7751↑0.0710.2 years↑
"• Target player discards all the cards in their hand, then draws that many cards."
+1 more matching line
Windfall82%
$0.25↑#160↑0.89↑28.0 years↑
"Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way."
Slate of Ancestry82%
$0.30↑#102410.0624.0 years↑
"
, 
, Discard your hand: Draw a card for each creature you control."
, , Discard your hand: Draw a card for each creature you control."
Decaying Time Loop82%
$0.41↑#7109↑0.003.0 years↑
"Discard all the cards in your hand, then draw that many cards."
Peer Past the Veil82%
$0.14↓#124140.122.1 years↑
"Discard your hand. Then draw X cards, where X is the number of card types among cards in your graveyard."
Forgotten Creation82%
$0.30↑#3476↑0.20↑10.5 years↑
"At the beginning of your upkeep, you may discard all the cards in your hand. If you do, draw that many cards."
Book Devourer81%
$0.16↓#23888↓0.008.0 years↑
"Whenever this creature deals combat damage to a player, you may discard all the cards in your hand. If you do, draw that many cards."
Fateful Showdown80%
$0.33↑#8846↑0.53↑10.1 years↑
"this card deals damage to any target equal to the number of cards in your hand. Discard all the cards in your hand, then draw that many cards."
Dangerous Wager80%
$0.12↓#151710.0014.5 years↑
"Discard your hand, then draw two cards."
Steal the Show80%
$0.26↑#103900.060.5 years
"• Target player discards any number of cards, then draws that many cards."
Temporal Cascade80%
$0.60↑#17493↓0.47↑23.0 years↑
"Choose one —"
School Daze80%
$0.17↓#130250.061.1 years
"Choose one —"