Deem Inferior {3}{U}
Sorcery
This spell costs {1} less to cast for each card you've drawn this turn.
The owner of target nonland permanent puts it into their library second from the top or on the bottom.
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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.
Inspired Fire 100%
$0.29#28943
"This spell costs {1} less to cast for each card you've drawn this turn."
Temporal Cleansing 100%
$0.18#12728
"The owner of target nonland permanent puts it into their library second from the top or on the bottom."
Run Out of Town 94%
$0.07#25783
"The owner of target nonland permanent puts it on their choice of the top or bottom of their library."
Trip Up 91%
$0.12#20765
"Target nonland permanent's owner puts it on their choice of the top or bottom of their library."
Vanish from Sight 89%
$0.07#20624
"Target nonland permanent's owner puts it on their choice of the top or bottom of their library. Surveil 1."
Sudden Setback 88%
$0.07#22302
"The owner of target spell or nonland permanent puts it on their choice of the top or bottom of their library."
Desynchronize 85%
$0.10#23932
"Target nonland permanent's owner puts it on their choice of the top or bottom of their library. Scry 2."
Heliod, the Radiant Dawn // Heliod, the Warped Eclipse 84%
$2.56#3209
"Spells you cast cost {1} less to cast for each card your opponents have drawn this turn."
Emrakul, the Promised End 82%
$20.28#1854
"This spell costs {1} less to cast for each card type among cards in your graveyard."
Wilt in the Heat 81%
$0.10#24207
"This spell costs {2} less to cast if one or more cards left your graveyard this turn."
Endless Detour 81%
$0.25#7408
"The owner of target spell, nonland permanent, or card in a graveyard puts it on their choice of the top or bottom of their library."