Aerial Surveyor 

Artifact — Vehicle
$1.13 #5000 0.19 4.5 years
Flying
Whenever this Vehicle attacks, if defending player controls more lands than you, search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle.
Crew 2
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Cards similar to Aerial Surveyor 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.
Scouting Hawk90%
$0.25↓#9434↓0.214.2 years
"When this creature enters, if an opponent controls more lands than you, search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle."
Loyal Warhound90%
$0.47↓#1636↑0.135.1 years
"When this creature enters, if an opponent controls more lands than you, search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle."
Keeper of the Accord86%
$0.48↓#1258↑0.245.8 years↑
"At the beginning of each opponent's end step, if that player controls more lands than you, you may search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle."
Stoic Farmer85%
$0.38↓#11780↓0.68↑5.6 years↑
"When this creature enters, search your library for a basic Plains card and reveal it. If an opponent controls more lands than you, put it onto the battlefield tapped. Otherwise, put it into your hand. Then shuffle."