Complex Automaton 
Artifact Creature — Golem
At the beginning of your upkeep, if you control seven or more permanents, return this creature to its owner's hand.
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Cards that do something similar 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.
Imaginary Pet 92%
$0.45#24041
"At the beginning of your upkeep, if you have a card in hand, return this creature to its owner's hand."
Roaring Primadox 84%
$0.09#20835
"At the beginning of your upkeep, return a creature you control to its owner's hand."
Species Gorger 84%
$0.17#13287
"At the beginning of your upkeep, return a creature you control to its owner's hand."
Sunken Hope 81%
$0.23#22050
"At the beginning of each player's upkeep, that player returns a creature they control to its owner's hand."
Mana Bloom 80%
$0.28#9403
"At the beginning of your upkeep, if this enchantment has no charge counters on it, return it to its owner's hand."
Trusted Advisor 80%
$0.31#20382
"At the beginning of your upkeep, return a blue creature you control to its owner's hand."
Stampeding Wildebeests 80%
$0.35#24338
"At the beginning of your upkeep, return a green creature you control to its owner's hand."