Citywatch Sphinx 
Creature — Sphinx
$0.08 #28848 0.06 7.9 years
Flying
When this creature dies, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
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Cards similar to Citywatch Sphinx 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.
Miner's Guidewing94%
$0.27↑#11127↑0.002.8 years↓
"When this creature dies, target creature you control explores."
Wary Watchdog88%
$0.18↑#15781↑0.091.9 years↓
"When this creature enters or dies, surveil 1."
Lys Alana Informant88%
$0.15↑#15114↑0.000.6 years↓
"When this creature enters or dies, surveil 1."
Wary Thespian88%
$0.03↓#18590↑0.26↑3.4 years↓
"When this creature enters or dies, surveil 1."
Thawbringer88%
$0.09↑#21541↑0.011.1 years↓
"When this creature enters or dies, surveil 1."
Muse's Encouragement88%
$0.06↓#233140.000.4 years↓
"Surveil 2."
Deadly Visit88%
$0.07↓#238850.007.9 years
"Surveil 2."
Wreckage Wickerfolk88%
$0.21↑#14160↑0.151.6 years↓
"When this creature enters, surveil 2."
Watcher in the Mist88%
$0.05↓#280120.007.9 years
"When this creature enters, surveil 2."
Failed Conversion87%
$0.07↓#258340.063.4 years↓
"When enchanted creature dies, surveil 2."
Consider87%
$0.29↑#379↑0.114.9 years↓
"Surveil 1."
Imperious Inkmage87%
$0.05↓#254190.000.4 years↓
"When this creature enters, surveil 2."
Dimir Informant87%
$0.15↑#242400.007.9 years
"When this creature enters, surveil 2."
A.I.M. Synthoids87%
$0.11↑#20319↑0.000.2 years↓
"When this creature enters, surveil 2."
Sterling Hound87%
$0.17↑#17278↑0.072.4 years↓
"When this creature enters, surveil 2."
Shore Lurker87%
$0.09↑#247200.000.6 years↓
"When this creature enters, surveil 1."
Whisper Agent86%
$0.07↓#238600.43↑7.9 years
"When this creature enters, surveil 1."
Sanitation Automaton86%
$0.08#22325↑0.18↑2.6 years↓
"When this creature enters, surveil 1."
Wild Hypothesis86%
$0.17↑#16301↑0.000.4 years↓
"Surveil 2."
Underwater Tunnel // Slimy Aquarium86%
$0.18↑#11106↑0.17↑1.9 years↓
"When you unlock this door, surveil 2."