Air Bladder 
Enchantment — Aura
$0.11 #27021 0.28 26.6 years
Enchant creature
Enchanted creature has flying.
Enchanted creature can block only creatures with flying.
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Cards similar to Air Bladder 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.
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