Reito Sentinel {3}
Artifact Creature — Construct
Defender
When this creature enters, target player mills three cards. (They put the top three cards of their library into their graveyard.)
{3}: Put target card from a graveyard on the bottom of its owner's library.
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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.
Reito Lantern 100%
$0.27#15100
"{3}: Put target card from a graveyard on the bottom of its owner's library."
Dutiful Knowledge Seeker 100%
$0.18#18587
"{3}: Put target card from a graveyard on the bottom of its owner's library."
Sundering Archaic 98%
$0.11#24258
"{2}: Put target card from a graveyard on the bottom of its owner's library."
Hoverstone Pilgrim 98%
$0.19#14664
"{2}: Put target card from a graveyard on the bottom of its owner's library."
Malevolent Chandelier 96%
$0.09#18743
"{2}: Put target card from a graveyard on the bottom of its owner's library. Activate only as a sorcery."
Watcher of the Wayside 95%
$0.21#15963
"When this creature enters, target player mills two cards. You gain 2 life."
Wall of Lost Thoughts 90%
$0.19#13733
"When this creature enters, target player mills four cards."
+1 more matching line
Epitaph Golem 88%
$0.13#16024
"{2}: Put target card from your graveyard on the bottom of your library."
Tomb Trawler 88%
$0.21#10855
"{2}: Put target card from your graveyard on the bottom of your library."
Transplant Theorist 88%
$0.24#9610
"{2}: Put target card from your graveyard on the bottom of your library."
Barkform Harvester 88%
$0.23#4302
"{2}: Put target card from your graveyard on the bottom of your library."