Pit Keeper 

Creature — Human Wizard
When this creature enters, if you have four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand.
click a line to search just that ability, click more to combine them
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.
Cadaver Imp 84%
$0.17#10035
"When this creature enters, you may return target creature card from your graveyard to your hand."
Graveshifter 84%
$0.20#2884
"When this creature enters, you may return target creature card from your graveyard to your hand."
Gravedigger 84%
$0.25#8820
"When this creature enters, you may return target creature card from your graveyard to your hand."
Phyrexian Missionary 84%
$0.23#17618
"When this creature enters, if it was kicked, return target creature card from your graveyard to your hand."
Woodland Sleuth 82%
$0.08#29866
"When this creature enters, if a creature died this turn, return a creature card at random from your graveyard to your hand."
Vampire Soulcaller 80%
#15371
"When this creature enters, return target creature card from your graveyard to your hand."
Sibsig Muckdraggers 80%
$0.07#22643
"When this creature enters, return target creature card from your graveyard to your hand."