Wound Reflection 

Enchantment
At the beginning of each end step, each opponent loses life equal to the life they lost this turn. (Damage causes loss of life.)
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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.
Warlock Class 99%
$0.15#6960
"At the beginning of your end step, each opponent loses life equal to the life they lost this turn."