Thopter Assembly 
Artifact Creature — Thopter
$0.30 #5507 0.18 15.7 years
Flying
At the beginning of your upkeep, if you control no Thopters other than this creature, return this creature to its owner's hand and create five 1/1 colorless Thopter artifact creature tokens with flying.
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Cards similar to Thopter Assembly 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.
Balshan Griffin92%
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Archwing Dragon81%
$0.38↑#16960↓0.00↓14.5 years↓
"At the beginning of the end step, return this creature to its owner's hand."
Saheeli, Consul of Oversight81%
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"Flying"
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$0.07↓#20161↓0.00↓10.1 years↓
"
, 
: Create a 1/1 colorless Thopter artifact creature token with flying."
, : Create a 1/1 colorless Thopter artifact creature token with flying."
Blinking Spirit78%
$0.32↑#22006↓0.1231.4 years↑
"
: Return this creature to its owner's hand."
: Return this creature to its owner's hand."
Ultron, Unlimited78%
$1.03↑#8630↓0.45↑0.3 years↓
"Flying"
Lantern Spirit78%
$0.10↓#30210↓0.00↓15.1 years
"
: Return this creature to its owner's hand."
: Return this creature to its owner's hand."
Viashino Sandscout77%
$0.08↓#26446↓0.07↓27.7 years↑
"At the beginning of the end step, return this creature to its owner's hand."
Glitterfang77%
$0.22↓#21013↓0.00↓21.4 years↑
"At the beginning of the end step, return this creature to its owner's hand."
Darting Merfolk77%
$0.18↓#26521↓0.00↓27.0 years↑
": Return this creature to its owner's hand."
: Return this creature to its owner's hand."
Fleeting Image77%
$0.19↓#30876↓0.2527.7 years↑
"
: Return this creature to its owner's hand."
: Return this creature to its owner's hand."
Squirrel Sanctuary76%
$0.38↑#9335↓0.07↓5.3 years↓
"When this enchantment enters, create a 1/1 green Squirrel creature token."
Luminous Angel76%
$0.71↑#22849↓0.1823.0 years↑
"At the beginning of your upkeep, you may create a 1/1 white Spirit creature token with flying."
+1 more matching line
Fighting Drake76%
$0.10↓#32007↓0.00↓29.0 years↑
"Flying"
Vassal Soul76%
$0.08↓#30769↓0.00↓14.0 years↓
"Flying"
Air Elemental76%
$0.02↓#24432↓0.2733.2 years↑
"Flying"
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$0.09↓#25646↓0.00↓33.2 years↑
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"Flying"
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$0.02↓#27920↓0.00↓11.0 years↓
"Flying"