Overmaster 
Sorcery
The next instant or sorcery spell you cast this turn can't be countered.
Draw a card.
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.
Sphinx of the Final Word 89%
$0.25#10176
"Instant and sorcery spells you control can't be countered."
Suffocation 88%
$0.15#31137
"Cast this spell only if you were dealt damage this turn by a red instant or sorcery spell."
Academy Wall 87%
$0.27#13132
"Whenever you cast an instant or sorcery spell, you may draw a card. If you do, discard a card. This ability triggers only once each turn."
Taigam, Ojutai Master 87%
$1.00#9267
"Whenever you cast an instant or sorcery spell from your hand, if this card attacked this turn, that spell gains rebound."
Galvanic Iteration 86%
$0.26#2918
"When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy."
Pigment Wrangler // Striking Palette 86%
$0.10#18650
"When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy."
Doublecast 86%
$0.21#11121
"When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy."
Howl of the Horde 86%
$0.24#13504
"When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy."
Teach by Example 86%
$0.12#7586
"When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy."
Lier, Disciple of the Drowned 86%
$0.43#2209
"Each instant and sorcery card in your graveyard has flashback. The flashback cost is equal to that card's mana cost."
Archmage Emeritus 86%
$0.51#258
"Whenever you cast or copy an instant or sorcery spell, draw a card."
Mizzix of the Izmagnus 86%
$0.80#6271
"Instant and sorcery spells you cast cost {1} less to cast for each experience counter you have."
Baral and Kari Zev 86%
$0.24#6953
"Whenever you cast your first instant or sorcery spell each turn, you may cast a spell with lesser mana value that shares a card type with it from your hand without paying its mana cost. If you don't, create First Mate Ragavan, a legendary 2/1 red Monkey Pirate creature token. It gains haste until end of turn."
Iroh, Grand Lotus 86%
$0.43#6379
"During your turn, each non-Lesson instant and sorcery card in your graveyard has flashback. The flashback cost is equal to that card's mana cost."
Pyromancer Ascension 86%
$0.28#11771
"Whenever you cast an instant or sorcery spell that has the same name as a card in your graveyard, you may put a quest counter on this enchantment."
Kess, Dissident Mage 86%
$4.32#3076
"Once during each of your turns, you may cast an instant or sorcery spell from your graveyard. If a spell cast this way would be put into your graveyard, exile it instead."
Veyran, Voice of Duality 85%
$1.36#790
"If you casting or copying an instant or sorcery spell causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time."
Archmage of Runes 85%
$2.90#1015
"Whenever you cast an instant or sorcery spell, draw a card."
Thousand-Year Storm 85%
$1.37#1394
"Whenever you cast an instant or sorcery spell, copy it for each other instant and sorcery spell you've cast before it this turn. You may choose new targets for the copies."
Johann, Apprentice Sorcerer 85%
$0.23#12245
"Once each turn, you may cast an instant or sorcery spell from the top of your library."