Read the Runes 
Instant
$0.57 #11277 0.06 23.9 years
Draw X cards. For each card drawn this way, discard a card unless you sacrifice a permanent.
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Cards similar to Read the Runes 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.
Perilous Research88%
$0.28↓#96620.22↑20.1 years↓
"Draw two cards, then sacrifice a permanent."
Pitiless Carnage86%
$0.31↓#6243↑0.002.4 years↓
"Sacrifice any number of permanents you control, then draw that many cards."
God-Eternal Bontu84%
$0.26↓#3553↑0.32↑7.3 years↓
"When this card enters, sacrifice any number of other permanents, then draw that many cards."
Witherbloom Charm80%
$0.31↓#5171↑0.000.4 years↓
"• You may sacrifice a permanent. If you do, draw two cards."
Pull from Tomorrow80%
$0.20↓#934↑0.16↑9.4 years↓
"Draw X cards, then discard a card."
Renounce76%
$0.34↓#21074↓0.33↑26.9 years↑
"Sacrifice any number of permanents. You gain 2 life for each permanent sacrificed this way."
Thoughtflare76%
$0.11↓#19962↓0.65↑13.9 years↓
"Draw four cards, then discard two cards."
Prying Eyes76%
$0.07↓#22970↓0.24↑7.6 years↓
"Draw four cards, then discard two cards."
Lorehold Command74%
$0.29↓#99470.29↑5.4 years↓
"• Sacrifice a permanent, then draw two cards."
Kaervek's Spite72%
$2.88↑#23560↓0.47↑29.6 years↑
"As an additional cost to cast this spell, sacrifice all permanents you control and discard your hand."
Infernal Tribute70%
$2.85↑#19797↓0.28↑29.2 years↑
"
, Sacrifice a nontoken permanent: Draw a card."
, Sacrifice a nontoken permanent: Draw a card."
Careful Study70%
$2.55↑#2720↑0.1224.9 years↑
"Draw two cards, then discard two cards."