Nameless Race {3}{B}
Creature
Trample
As this creature enters, pay any amount of life. The amount you pay can't be more than the total number of white nontoken permanents your opponents control plus the total number of white cards in their graveyards.
Nameless Race's power and toughness are each equal to the life paid as it entered.
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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.
Minion of the Wastes 100%
$0.97#24042
"this card's power and toughness are each equal to the life paid as it entered."
+1 more matching line
Vizkopa Confessor 95%
$0.11#22629
"When this creature enters, pay any amount of life. Target opponent reveals that many cards from their hand. You choose one of them and exile it."