Circle of Protection: Shadow {1}{W}
Enchantment
{1}: The next time a creature of your choice with shadow would deal damage to you this turn, prevent that damage.
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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.
Forcefield 85%
#17284
"{1}: The next time an unblocked creature of your choice would deal combat damage to you this turn, prevent all but 1 of that damage."