Sealed Fate {X}{U}{B}
Sorcery
Look at the top X cards of target opponent's library. Exile one of those cards and put the rest back on top of that player's library in any order.
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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.
Cruel Fate 88%
$0.47#30168
"Look at the top five cards of target opponent's library. Put one of those cards into that player's graveyard and the rest on top of their library in any order."
Siphon Insight 82%
$0.33#4239
"Look at the top two cards of target opponent's library. Exile one of them face down and put the other on the bottom of that library. You may play the exiled card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell."