Zodiac Dog {2}{R}
Creature — Dog
Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)
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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.
Crevasse 84%
$1.43#31248
"Creatures with mountainwalk can be blocked as though they didn't have mountainwalk."