Keldon Twilight 


Enchantment
At the beginning of each player's end step, if no creatures attacked this turn, that player sacrifices a creature of their choice that they controlled since the beginning of the turn.
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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.
Thirsting Axe 82%
$0.05#26913
"At the beginning of your end step, if equipped creature didn't deal combat damage to a creature this turn, sacrifice it."
Kethek, Crucible Goliath 82%
$0.25#9265
"At the beginning of your end step, you may sacrifice another creature. If you do, reveal cards from the top of your library until you reveal a nonlegendary creature card with lesser mana value, put it onto the battlefield, then put the rest on the bottom of your library in a random order."