Mjölnir, Hammer of Thor {3}{R}
Legendary Artifact — Equipment
When Mjölnir enters, it deals 4 damage to up to one target creature.
Double all damage equipped creature would deal.
Equip worthy {1} (A creature is worthy if it's a legendary non-Villain that's red and/or white.)
{2}{R}, Discard this card: It deals 2 damage to each creature.
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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.