Stormcatch Mentor 
Creature — Otter Wizard
$0.33 #949 0.29 2.2 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.
Goblin Electromancer98%
$0.21↓#673↑0.2314.1 years↑
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Archmage of Runes97%
$3.31↑#9240.331.9 years
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Mocking Sprite97%
$0.19↓#2898↓0.08↓3.1 years
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Jace's Sanctum96%
$0.57↑#4171↓0.2011.3 years↑
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Storm Skreelix96%
$0.20↓#18537↓0.07↓5.1 years↑
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Arcane Melee96%
$0.37↑#11690↓0.3214.5 years↑
"Instant and sorcery spells cost 
less to cast."
less to cast."
Curious Homunculus // Voracious Reader95%
$0.32↓#9577↓0.12↓10.2 years↑
"Instant and sorcery spells you cast cost less to cast."
less to cast."+1 more matching line
Case of the Ransacked Lab92%
$0.65↑#2852↓0.18↓2.7 years
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Haughty Djinn92%
$0.29↓#2551↓0.194.1 years↑
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Dirgur Focusmage // Braingeyser92%
$0.31↓#8056↓0.18↓0.5 years↓
"Instant and sorcery spells you cast cost less to cast."
less to cast."
Mizzix of the Izmagnus91%
$0.84↑#6421↓0.75↑10.9 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 Swiftspear89%
$0.27↓#7914↓0.17↓12.1 years↑
"Prowess"
+1 more matching line
Nimble-Blade Khenra89%
$0.05↓#26878↓0.00↓9.5 years↑
"Prowess"
Dragon-Style Twins89%
$0.32↓#21486↓0.06↓12.1 years↑
"Prowess"
Dragon Bell Monk89%
$0.07↓#25997↓0.00↓11.7 years↑
"Prowess"
Vedalken Blademaster89%
$0.05↓#30563↓0.06↓10.1 years↑
"Prowess"
Jeskai Brushmaster89%
$0.14↓#19477↓0.00↓1.5 years
"Prowess"
Umara Entangler89%
$0.06↓#26862↓0.06↓10.7 years↑
"Prowess"
Sanguinary Mage89%
$0.06↓#24597↓0.2410.5 years↑
"Prowess"
Lightning Visionary89%
$0.23↓#24504↓0.00↓6.3 years↑
"Prowess"