Unwelcome Sprite 
Creature — Faerie Rogue
$0.24 #13443 0.00 0.6 years
Flying
Whenever you cast a spell during an opponent's turn, surveil 2. (Look at the top two cards of your library. You may 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 Unwelcome Sprite 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.
Mischievous Chimera94%
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"Flying"
Shore Lurker84%
$0.09↓#24720↓0.000.6 years
"When this creature enters, surveil 1."
Wreckage Wickerfolk84%
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"When this creature enters, surveil 2."
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"When this creature enters, surveil 2."
Whisper Agent83%
$0.07↓#23860↓0.43↑7.9 years↑
"When this creature enters, surveil 1."
Sanitation Automaton83%
$0.08↓#22325↓0.18↑2.6 years↑
"When this creature enters, surveil 1."
Imperious Inkmage83%
$0.05↓#25419↓0.000.4 years
"When this creature enters, surveil 2."
Dimir Informant83%
$0.15↓#24240↓0.007.9 years↑
"When this creature enters, surveil 2."
A.I.M. Synthoids83%
$0.11↓#20319↓0.000.2 years
"When this creature enters, surveil 2."
Sterling Hound83%
$0.17↓#17278↓0.072.4 years↑
"When this creature enters, surveil 2."
Alela, Cunning Conqueror83%
$13.72↑#3461↑0.80↑3.0 years↑
"Flying"
Cruel Witness82%
$0.08↓#18773↓0.38↑4.8 years↑
"Whenever you cast a noncreature spell, surveil 1."
Sinister Starfish82%
$0.18↓#9367↑0.005.2 years↑
"
: Surveil 1."
: Surveil 1."
Wretched Doll82%
$0.15↓#21195↓0.18↑1.6 years
"
, : Surveil 1."
, : Surveil 1."
Vanguard Seraph81%
$0.19↓#111440.13↑1.8 years↑
"Whenever you gain life for the first time each turn, surveil 1."
Muse's Encouragement81%
$0.06↓#23314↓0.000.4 years
"Surveil 2."
Underwater Tunnel // Slimy Aquarium80%
$0.18↓#111060.17↑1.9 years↑
"When you unlock this door, surveil 2."
Barrier of Bones80%
$0.08↓#151500.007.9 years↑
"When this creature enters, surveil 1."
Consider80%
$0.29↑#379↑0.11↑4.9 years↑
"Surveil 1."
Nightveil Sprite80%
$0.11↓#7481↑0.057.9 years↑
"Whenever this creature attacks, surveil 1."
+1 more matching line