Wall of Vapor {3}{U}
Creature — Wall
Defender (This creature can't attack.)
Prevent all damage that would be dealt to this creature by creatures it's blocking.
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Cards that do something similar expected a card that isn't here?
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Wall of Shadows 100%
$0.16#21541
"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."