Backdraft 

Instant
Choose a player who cast one or more sorcery spells this turn. Backdraft deals damage to that player equal to half the damage dealt by one of those sorcery spells this turn, rounded down.
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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.
Ian Malcolm, Chaotician 85%
$6.55#11008
"During each player's turn, that player may cast a spell from among the cards they don't own exiled with this card, and mana of any type can be spent to cast it."
Deafening Silence 84%
$2.03#1946
"Each player can't cast more than one noncreature spell each turn."
City of Solitude 82%
$24.45#12894
"Players can cast spells and activate abilities only during their own turns."
Weftwalking 82%
$0.35#14864
"The first spell each player casts during each of their turns may be cast without paying its mana cost."