Beseech the Mirror 



Sorcery
Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)
Search your library for a card, exile it face down, then shuffle. If this spell was bargained, you may cast the exiled card without paying its mana cost if that spell's mana value is 4 or less. Put the exiled card into your hand if it wasn't cast this way.
click a line to search just that ability, click more to combine them
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.
The Creation of Avacyn 90%
$0.23#8320
"Search your library for a card, exile it face down, then shuffle."
Distant Memories 89%
$0.30#20371
"Search your library for a card, exile it, then shuffle. Any opponent may have you put that card into your hand. If no player does, you draw three cards."
Coveted Prize 85%
$0.24#6824
"Search your library for a card, put it into your hand, then shuffle. If you have a full party, you may cast a spell with mana value 4 or less from your hand without paying its mana cost."
Illicit Shipment 80%
$0.12#10124
"Search your library for a card, put it into your hand, then shuffle."