Hotshot Investigators 

Creature — Vedalken Detective
When this creature enters, return up to one other target creature to its owner's hand. If you controlled it, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")
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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.
Rimekin Recluse 99%
$0.24#19501
"When this creature enters, return up to one other target creature to its owner's hand."
Matterbending Mage 99%
$0.12#25486
"When this creature enters, return up to one other target creature to its owner's hand."
Air-Cult Elemental 99%
$0.10#23982
"When this creature enters, return up to one other target creature to its owner's hand."
Winter Eladrin 99%
$0.15#15362
"When this creature enters, return up to one other target creature to its owner's hand."
Moonsnare Specialist 92%
$0.23#7027
"When this creature enters, return up to one target creature to its owner's hand."
Peerless Ropemaster 89%
$0.05#25659
"When this creature enters, return up to one target tapped creature to its owner's hand."
Flock Impostor 88%
$0.17#11855
"When this creature enters, return up to one other target creature you control to its owner's hand."
Cunning Geysermage 88%
$0.09#26240
"When this creature enters, if it was kicked, return up to one other target creature to its owner's hand."
Zephyr Sentinel 83%
$0.17#18412
"When this creature enters, return up to one other target creature you control to its owner's hand. If it was a Soldier, put a +1/+1 counter on this creature."