Wall of Shadows {1}{B}{B}
Creature — Wall
Defender (This creature can't attack.)
Prevent all damage that would be dealt to this creature by creatures it's blocking.
This creature can't be the target of spells that can target only Walls or of abilities that can target only Walls.
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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.
Wall of Vapor 100%
$0.12#21817
"Prevent all damage that would be dealt to this creature by creatures it's blocking."
+1 more matching line
Armored Transport 89%
$0.07#22133
"Prevent all combat damage that would be dealt to this creature by creatures blocking it."