Celestial Messenger 
Creature — Bird Spirit
$0.11 #30960 0.00 7.2 years
Flash (You may cast this card any time you could cast an instant.)
Flying
This creature gets +1/+1 as long as you control a Yanling planeswalker.
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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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