Kataki, War's Wage {1}{W}
Legendary Creature — Spirit
All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {1}."
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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.
Energy Flux 99%
#14693
"All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {2}.""