Green Dragon 
Creature — Dragon
$0.25 #14109 0.44 5.2 years
Flying
Poison Breath — When this creature enters, until end of turn, whenever a creature an opponent controls is dealt damage, destroy it.
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Cards similar to Green Dragon 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.
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"Whenever this creature deals combat damage to a creature, destroy that creature at end of combat."
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"Whenever this creature deals combat damage to a creature, destroy that creature."
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"Flying"
Creepy Doll74%
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Plague Fiend74%
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"Whenever this creature deals combat damage to a creature, destroy that creature unless its controller pays 
."
."
Storm, Shaker of Skies72%
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Venomous Fangs72%
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