Blightwing Bandit 

Creature — Faerie Rogue
Flying, deathtouch
Whenever you cast your first spell during each opponent's turn, look at the top card of that player's library, then exile it face down. You may play that card for as long as it remains exiled, and mana of any type can be spent to cast 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.
Mind's Dilation 86%
$5.25#2682
"Whenever an opponent casts their first spell each turn, that player exiles the top card of their library. If it's a nonland card, you may cast it without paying its mana cost."
Klaw, Master of Sound 86%
$0.30#20623
"Whenever this card deals combat damage to a player, look at the top card of that player's library, then exile it face down. You may play it for as long as it remains exiled. Mana of any type can be spent to cast a spell this way."
Shared Fate 83%
$0.65#15027
"If a player would draw a card, that player exiles the top card of one of their opponents' libraries face down instead."
Gonti, Canny Acquisitor 83%
$1.51#7924
"Whenever one or more creatures you control deal combat damage to a player, look at the top card of that player's library, then exile it face down. You may play that card for as long as it remains exiled, and mana of any type can be spent to cast that spell."
Edward Kenway 80%
$5.86#5246
"Whenever a Vehicle you control deals combat damage to a player, look at the top card of that player's library, then exile it face down. You may play that card for as long as it remains exiled."