Bleeding Effect {2}{W}{B}
Enchantment
At the beginning of combat on your turn, creatures you control gain flying until end of turn if a creature card in your graveyard has flying. The same is true for first strike, double strike, deathtouch, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.
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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.
Candlegrove Witch 83%
$0.17#24473
"At the beginning of combat on your turn, if you control three or more creatures with different powers, this creature gains flying until end of turn."
Cosmic Spider-Man 80%
$3.25#8819
"At the beginning of combat on your turn, other Spiders you control gain flying, first strike, trample, lifelink, and haste until end of turn."