Destructive Flow {B}{R}{G}
Enchantment
At the beginning of each player's upkeep, that player sacrifices a nonbasic land of their choice.
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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.
Mana Vortex 97%
#20106
"At the beginning of each player's upkeep, that player sacrifices a land of their choice."