Cunning Nightbonder 

Creature — Human Rogue
Flash
Spells with flash you cast cost {1} less to cast and can't be countered.
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.
Council of the Absolute 87%
$0.31#23991
"Spells with the chosen name you cast cost {2} less to cast."
Norman Osborn // Green Goblin 84%
$18.99#5662
"Spells you cast from your graveyard cost {2} less to cast."
Emet-Selch of the Third Seat 84%
$0.34#3271
"Spells you cast from your graveyard cost {2} less to cast."
Locket of Yesterdays 84%
$2.30#7553
"Spells you cast cost {1} less to cast for each card with the same name as that spell in your graveyard."
Breaking Wave 84%
$0.70#21927
"You may cast this spell as though it had flash if you pay {2} more to cast it."
Rout 84%
$0.41#7784
"You may cast this spell as though it had flash if you pay {2} more to cast it."
Harbinger of the Tides 84%
$0.18#11336
"You may cast this spell as though it had flash if you pay {2} more to cast it."
Saproling Symbiosis 84%
$1.91#5333
"You may cast this spell as though it had flash if you pay {2} more to cast it."
Oakshade Stalker // Moonlit Ambusher 84%
$0.22#22674
"You may cast this spell as though it had flash if you pay {2} more to cast it."
Asinine Antics 84%
$0.83#7715
"You may cast this spell as though it had flash if you pay {2} more to cast it."
Mystical Tether 84%
$0.12#19396
"You may cast this spell as though it had flash if you pay {2} more to cast it."
Ghitu Fire 84%
$0.37#22230
"You may cast this spell as though it had flash if you pay {2} more to cast it."
Twilight's Call 84%
$0.71#13913
"You may cast this spell as though it had flash if you pay {2} more to cast it."