Sinkhole Surveyor 

Creature — Bird Scout
$0.31 #9346 0.13 1.4 years
Flying
Whenever this creature attacks, you lose 1 life and this creature endures 1. (Put a +1/+1 counter on it or create a 1/1 white Spirit creature token.)
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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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. If you do, it endures 1."
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"
,
, Pay X life: This creature endures X. Activate only as a sorcery."