Sidequest: Hunt the Mark // Yiazmat, Ultimate Mark
Enchantment // Legendary Creature — Dragon
When this enchantment enters, destroy up to one target creature.
At the beginning of your end step, if a creature died under an opponent's control this turn, create a Treasure token. Then if you control three or more Treasures, transform this enchantment.
{1}{B}, Sacrifice another creature or artifact: Yiazmat gains indestructible until end of turn. Tap it.
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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.
Relic Retriever 90%
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"At the beginning of each end step, if a card left your graveyard this turn, create a Treasure token."
Safana, Calimport Cutthroat 89%
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"At the beginning of your end step, if you have the initiative, create a Treasure token. Create three of those tokens instead if you've completed a dungeon."
Enterprising Scallywag 87%
$0.23#5204
"At the beginning of your end step, if you descended this turn, create a Treasure token."