Aerial Surveyor 
Artifact — Vehicle
$1.07 #5111 0.00 4.7 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 Hawk91%
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"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 Warhound91%
$0.52↓#1653↑0.11↑5.2 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."
Keeper of the Accord90%
$0.48↓#1307↑0.20↑5.9 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 Farmer86%
$0.35↓#12012↓0.005.7 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."
The Regalia86%
$1.55↑#2419↑0.32↑1.4 years↓
"Crew 1"
Thundersteel Colossus84%
$0.21↓#11514↓0.13↑4.7 years
"Crew 2"
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"Crew 2"
Adventurer's Airship84%
$0.21↓#10652↓0.071.4 years↓
"Crew 2"
+1 more matching line
Consulate Dreadnought84%
$0.29↓#9273↓0.009.7 years↑
"Crew 6"
Sky Skiff84%
$0.15↓#18887↓0.0610.1 years↑
"Crew 1"
+1 more matching line
Dragonfly Suit84%
$0.11↓#19375↓0.004.7 years
"Crew 1"
Air Response Unit84%
$0.12↓#17940↓0.061.7 years↓
"Crew 1"
Subway Train83%
$0.08↓#17565↓0.86↑1.1 years↓
"Crew 2"
Sleek Schooner83%
$0.18↓#21507↓0.009.1 years↑
"Crew 1"
Brute Suit83%
$0.17↓#16987↓0.004.7 years
"Crew 1"
Ovalchase Dragster83%
$0.26↓#17364↓0.0610.1 years↑
"Crew 1"
Funeral Longboat83%
$0.12↓#20894↓0.38↑5.7 years↑
"Crew 1"
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"Crew 1"
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"Crew 3"
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"Crew 3"