Perilous Research 
Instant
$0.27 #9782 0.06 20.2 years
Draw two cards, then sacrifice a permanent.
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Cards similar to Perilous 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.
Witherbloom Charm91%
$0.31↑#4675↑0.110.5 years↓
"• You may sacrifice a permanent. If you do, draw two cards."
Read the Runes88%
$0.59↑#114980.1224.0 years↑
"Draw X cards. For each card drawn this way, discard a card unless you sacrifice a permanent."
Pitiless Carnage88%
$0.33↑#6446↑0.002.5 years↓
"Sacrifice any number of permanents you control, then draw that many cards."
God-Eternal Bontu88%
$0.31↑#3360↑0.33↑7.5 years↓
"When this card enters, sacrifice any number of other permanents, then draw that many cards."
Lorehold Command86%
$0.34↑#101860.005.5 years↓
"• Sacrifice a permanent, then draw two cards."
Infernal Tribute80%
$2.96↑#20081↓0.1229.4 years↑
"
, Sacrifice a nontoken permanent: Draw a card."
, Sacrifice a nontoken permanent: Draw a card."
Angelic Purge78%
$0.09↓#12490↓0.0710.5 years↓
"As an additional cost to cast this spell, sacrifice a permanent."
Renounce78%
$0.30↑#21265↓0.19↑27.0 years↑
"Sacrifice any number of permanents. You gain 2 life for each permanent sacrificed this way."
Merciless Resolve73%
$0.08↓#19192↓0.0610.5 years↓
"Draw two cards."
Crack the Earth72%
$0.27#19080↓0.31↑21.7 years↑
"Each player sacrifices a permanent of their choice."
Costly Plunder72%
$0.20↓#3481↑0.079.1 years↓
"Draw two cards."
Foundry Helix72%
$0.15↓#20398↓0.005.3 years↓
"As an additional cost to cast this spell, sacrifice a permanent."
Corrupted Conviction71%
$0.35↑#601↑0.093.5 years↓
"Draw two cards."
Skulltap71%
$0.16↓#19209↓0.0023.4 years↑
"Draw two cards."
Village Rites71%
$0.33↑#202↑0.096.3 years↓
"Draw two cards."
Altar's Reap71%
$0.17↓#4491↑0.1415.1 years↓
"Draw two cards."
Earth-Cult Elemental70%
$0.25↓#79210.37↑5.2 years↓
"Each player sacrifices a permanent of their choice."
Vraska, Golgari Queen70%
$4.96↑#4242↑0.54↑8.1 years↓
"+2: You may sacrifice another permanent. If you do, you gain 1 life and draw a card."