Farmstead {W}{W}{W}
Enchantment — Aura
Enchant land
Enchanted land has "At the beginning of your upkeep, you may pay {W}{W}. If you do, you gain 1 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.