Lasting Tarfire {1}{R}
Enchantment
At the beginning of each end step, if you put a counter on a creature this turn, this enchantment deals 2 damage to each opponent.
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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.