Stormcatch Mentor 
Creature — Otter Wizard
$0.33 #943 0.24 2.1 years
Haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Instant and sorcery spells you cast cost 
less to cast.
less to cast.Click a line or tag to filter
Cards similar to Stormcatch Mentor 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.
Storm Skreelix98%
$0.17↓#18105↓0.184.9 years↑
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Goblin Electromancer98%
$0.21↓#661↑0.2614.0 years↑
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Mocking Sprite97%
$0.18↓#2866↓0.163.0 years
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Archmage of Runes97%
$3.31↑#9540.311.8 years
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Jace's Sanctum96%
$0.58↑#4173↓0.34↑11.1 years↑
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Arcane Melee96%
$0.35↑#11492↓0.3014.3 years↑
"Instant and sorcery spells cost 
less to cast."
less to cast."
Curious Homunculus // Voracious Reader95%
$0.33#9470↓0.2910.1 years↑
"Instant and sorcery spells you cast cost less to cast."
less to cast."+1 more matching line
Haughty Djinn92%
$0.33#2496↓0.194.0 years↑
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Case of the Ransacked Lab92%
$0.47↑#2746↓0.272.6 years
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Dirgur Focusmage // Braingeyser92%
$0.28↓#9532↓0.300.4 years↓
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Mizzix of the Izmagnus91%
$0.70↑#6304↓0.77↑10.8 years↑
"Instant and sorcery spells you cast cost less to cast for each experience counter you have."
less to cast for each experience counter you have."
Monastery Swiftspear90%
$0.28↓#7706↓0.12↓11.9 years↑
"Prowess"
+1 more matching line
Elementalist Adept90%
$0.13↓#17264↓0.07↓1.8 years
"Prowess"
+1 more matching line
Dragon-Style Twins90%
$0.33#20988↓0.2811.9 years↑
"Prowess"
Nimble-Blade Khenra90%
$0.06↓#26523↓0.50↑9.4 years↑
"Prowess"
Vedalken Blademaster90%
$0.06↓#30309↓0.07↓9.9 years↑
"Prowess"
Lightning Visionary90%
$0.23↓#24072↓0.10↓6.1 years↑
"Prowess"
Agent of Atlas90%
$0.07↓#26257↓0.00↓0.2 years↓
"Prowess"
Sanguinary Mage90%
$0.07↓#24270↓0.1810.4 years↑
"Prowess"
Dragon Bell Monk90%
$0.08↓#25646↓0.2811.6 years↑
"Prowess"