Dense Canopy 
Enchantment
$0.22 #23330 0.56 21.3 years
Creatures with flying can block only creatures with flying.
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Cards similar to Dense Canopy 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.
Chaosphere98%
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"Creatures with flying can block only creatures with flying."
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"Enchanted creature can block only creatures with flying."
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"Enchanted creature can block only creatures with flying."
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"Creatures with flying can't block creatures you control."
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"This creature can't be blocked by creatures with flying."
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"This creature can't be blocked by creatures with flying."
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"All creatures with flying able to block this creature do so."