Sphinx's Decree {1}{W}
Sorcery
Each opponent can't cast instant or sorcery spells during that player's next turn.
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Cards that do something similar expected a card that isn't here?
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Sorcerer Class 85%
$2.98#3636
"Whenever you cast an instant or sorcery spell, that spell deals damage to each opponent equal to the number of instant and sorcery spells you've cast this turn."
Wrexial, the Risen Deep 85%
$1.87#5216
"Whenever this card deals combat damage to a player, you may cast target instant or sorcery card from that player's graveyard without paying its mana cost. If that spell would be put into a graveyard, exile it instead."
Overmaster 82%
$2.99#3095
"The next instant or sorcery spell you cast this turn can't be countered."
Storm, Force of Nature 81%
$8.51#7259
"Whenever this card deals combat damage to a player, the next instant or sorcery spell you cast this turn has storm."
Suffocation 81%
$0.15#31137
"Cast this spell only if you were dealt damage this turn by a red instant or sorcery spell."
Arcane Heist 80%
$3.84#5063
"You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost. If that spell would be put into their graveyard, exile it instead."
Efreet Flamepainter 80%
$0.24#15040
"Whenever this creature deals combat damage to a player, you may cast target instant or sorcery card from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead."