Wanderwine Prophets {4}{U}{U}
Creature — Merfolk Wizard
Champion a Merfolk (When this enters, sacrifice it unless you exile another Merfolk you control. When this leaves the battlefield, that card returns to the battlefield.)
Whenever this creature deals combat damage to a player, you may sacrifice a Merfolk. If you do, take an extra turn after this one.
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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.
Akki Underminer 83%
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"Whenever this creature deals combat damage to a player, that player sacrifices a permanent of their choice."
Haunted Cadaver 83%
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Cacophony Scamp 82%
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