Hellkite Whelp 

Creature — Dragon
Flying
Whenever this creature attacks, it deals 1 damage to target creature defending player controls.
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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.
Purifying Dragon 97%
$0.13#23722
"Whenever this creature attacks, it deals 1 damage to target creature defending player controls. If that creature is a Zombie, this creature deals 2 damage to it instead."
Fire-Omen Crane 83%
$0.15#29986
"Whenever this creature attacks, it deals 1 damage to target creature an opponent controls."
+1 more matching line