Elephant Resurgence 

Sorcery
Each player creates a green Elephant creature token. Those creatures have "This token's power and toughness are each equal to the number of creature cards in its controller's graveyard."
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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.