Clandestine Meddler 

Creature — Vampire Rogue
$0.04 #24849 0.00 2.7 years
When this creature enters, suspect up to one other target creature you control. (A suspected creature has menace and can't block.)
Whenever one or more suspected creatures you control attack, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
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Cards similar to Clandestine Meddler 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.
Rune-Brand Juggler86%
$0.02↓#296010.062.7 years
"When this creature enters, suspect up to one target creature you control."
Frantic Scapegoat84%
$0.17↑#15712↑0.22↑2.7 years
"When this creature enters, suspect it."
+1 more matching line
J. Jonah Jameson80%
$0.20↑#8985↑0.53↑1.8 years
"When this card enters, suspect up to one target creature."
+1 more matching line
Dinotomaton79%
$0.13↑#18579↑0.062.9 years
"When this creature enters, target creature you control gains menace until end of turn."
+1 more matching line
Agrus Kos, Spirit of Justice78%
$0.33↑#12205↑0.18↑2.7 years
"Whenever this card enters or attacks, choose up to one target creature. If it's suspected, exile it. Otherwise, suspect it."
Grim Javelineer78%
$0.06↑#268540.25↑1.7 years↓
"Whenever you attack, target attacking creature gets +1/+0 until end of turn. When that creature dies this turn, surveil 1."
Hot Pursuit77%
$0.38↑#6460↑0.002.7 years
"When this enchantment enters, suspect target creature an opponent controls. As long as this enchantment remains on the battlefield, that creature is also goaded."
Spider-Man Noir76%
$0.24↑#8845↑0.061.1 years↓
"Whenever a creature you control attacks alone, put a +1/+1 counter on it. Then surveil X, where X is the number of counters on it."
Vanguard Seraph75%
$0.17↑#10496↑0.10↑1.9 years
"Whenever you gain life for the first time each turn, surveil 1."
Wary Farmer75%
$0.10↑#19470↑0.020.7 years↓
"At the beginning of your end step, if another creature entered the battlefield under your control this turn, surveil 1."
Dimir Strandcatcher74%
$0.84↑#16738↑0.062.7 years
"Whenever you attack, surveil X, where X is the number of opponents being attacked."