Gurzigost 


Creature — Beast
At the beginning of your upkeep, sacrifice this creature unless you put two cards from your graveyard on the bottom of your library.
{G}{G}, Discard a card: You may have this creature assign its combat damage this turn as though it weren't blocked.
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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.
Shadowborn Demon 85%
$0.46#16251
"At the beginning of your upkeep, if there are fewer than six creature cards in your graveyard, sacrifice a creature."
Extravagant Spirit 84%
$0.36#31505
"At the beginning of your upkeep, sacrifice this creature unless you pay {1} for each card in your hand."
Anurid Scavenger 83%
$0.24#23124
"At the beginning of your upkeep, sacrifice this creature unless you put a card from your graveyard on the bottom of your library."