Basilica Stalker 
Creature — Vampire Detective
$0.10 #21722 0.00 2.6 years
Flying
Whenever this creature deals combat damage to a player, you gain 1 life and surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
Disguise 
(You may cast this card face down for 
as a 2/2 creature with ward 
. Turn it face up any time for its disguise cost.)
(You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)Click a line or tag to filter
Cards similar to Basilica Stalker 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.
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"When this creature enters, surveil 1."
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$0.18↑#11106↑0.17↑1.9 years
"When you unlock this door, surveil 2."
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$0.21↑#14160↑0.15↑1.6 years↓
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"When this creature enters, surveil 2."
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"When this creature enters, surveil 2."
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$0.05↓#254190.000.4 years↓
"When this creature enters, surveil 2."
Sterling Hound86%
$0.17↑#17278↑0.072.4 years
"When this creature enters, surveil 2."
A.I.M. Synthoids86%
$0.11↑#203190.000.2 years↓
"When this creature enters, surveil 2."
Barrier of Bones86%
$0.08↓#15150↑0.007.9 years↑
"When this creature enters, surveil 1."
Vanguard Seraph85%
$0.19↑#11144↑0.13↑1.8 years
"Whenever you gain life for the first time each turn, surveil 1."
MACH-1, Swooping Scoundrel84%
$0.28↑#26549↓0.000.2 years↓
"When this card enters and whenever you gain life, surveil 1. This ability triggers only once each turn."
Healer's Hawk84%
$0.17↑#3839↑0.007.9 years↑
"Flying"
Vampire Nighthawk84%
$0.15↑#1742↑0.20↑16.9 years↑
"Flying"
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$0.15↑#15218↑0.0012.1 years↑
"Flying"
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$0.11↑#7481↑0.057.9 years↑
"Whenever this creature attacks, surveil 1."
+1 more matching line
Il Mheg Pixie84%
$0.17↑#13085↑0.10↑1.2 years↓
"Whenever this creature attacks, surveil 1."