Thryx, the Sudden Storm 
Legendary Creature — Elemental Giant
$0.24 #3500 0.24 6.7 years
Flash (You may cast this spell any time you could cast an instant.)
Flying
Spells you cast with mana value 5 or greater cost 
less to cast and can't be countered.
less to cast and can't be countered.Click a line or tag to filter
Cards similar to Thryx, the Sudden Storm 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.
Krosan Drover80%
$0.18↓#13981↓0.1523.4 years↑
"Creature spells you cast with mana value 6 or greater cost 
less to cast."
less to cast."
Cunning Nightbonder80%
$0.30↑#10415↓0.62↑6.5 years
"Spells with flash you cast cost less to cast and can't be countered."
less to cast and can't be countered."
Malevolent Hermit // Benevolent Geist79%
$0.98↑#4410↓0.195.1 years↓
"Flying"
Highspire Bell-Ringer78%
$0.16↓#10943↓0.00↓1.5 years↓
"Flying"
It That Heralds the End76%
$0.33↑#2290↑0.312.3 years↓
"Colorless spells you cast with mana value 7 or greater cost less to cast."
less to cast."
Gaea's Herald76%
$1.06↑#12680↓0.51↑25.7 years↑
"Creature spells can't be countered."
Prowling Serpopard75%
$3.89↑#36880.45↑9.5 years↑
"Creature spells you control can't be countered."
Insist74%
$2.06↑#17782↓0.07↓24.7 years↑
"The next creature spell you cast this turn can't be countered."
Vexing Shusher72%
$5.45↑#5740↓0.80↑18.5 years↑
"This spell can't be countered."
Spectacle Mage72%
$0.11↓#21241↓0.05↓5.5 years↓
"Instant and sorcery spells you cast with mana value 5 or greater cost less to cast."
less to cast."
Stone Calendar71%
$14.91↑#20542↓0.37↑32.2 years↑
"Spells you cast cost less to cast."
less to cast."
Skyline Predator70%
$0.06↓#30800↓0.07↓14.0 years↑
"Flash"
Aven Reedstalker70%
$0.03↓#28328↓0.00↓9.3 years↑
"Flash"
Nephalia Seakite70%
$0.08↓#29731↓0.00↓14.7 years↑
"Flash"
Cloaked Siren70%
$0.04↓#29480↓0.00↓12.5 years↑
"Flash"
Vexing Gull70%
$0.07↓#25807↓0.00↓6.7 years
"Flash"
Spire Monitor70%
$0.06↓#30962↓0.2115.4 years↑
"Flash"
Faerie Invaders70%
$0.17↓#27014↓0.07↓14.3 years↑
"Flash"
Living Tempest70%
$0.03↓#30245↓0.06↓6.1 years
"Flash"
Fighting Drake70%
$0.10↓#32007↓0.00↓29.0 years↑
"Flying"