Green Goblin, Revenant {3}{B}{R}
Legendary Creature — Goblin Human Villain
Flying, deathtouch
Whenever Green Goblin attacks, discard a card. Then draw a card for each card you've discarded this turn.
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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.
Azula, Ruthless Firebender 88%
$0.77#13694
"Whenever this card attacks, you may discard a card. Then you get an experience counter for each player who discarded a card this turn."
Veronica, Dissident Scribe 85%
$0.34#8598
"Whenever this card attacks, you may discard a card. If you do, draw a card."