Containment Priest {1}{W}
Creature — Human Cleric
Flash
If a nontoken creature would enter and it wasn't cast, exile it instead.
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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.
Primeval Spawn 93%
$0.43#10349
"If this creature would enter and it wasn't cast or no mana was spent to cast it, exile it instead."