Naiad of Hidden Coves 
Enchantment Creature — Nymph
$0.22 #10618 0.06 6.7 years
During turns other than yours, spells you cast cost 
less to cast.
less to cast.Click a line or tag to filter
Cards similar to Naiad of Hidden Coves 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.
Geyser Drake100%
$0.13↓#86970.19↑2.5 years↓
"During turns other than yours, spells you cast cost less to cast."
less to cast."
Stone Calendar84%
$14.91↑#20542↓0.37↑32.2 years↑
"Spells you cast cost less to cast."
less to cast."
Memory Crystal80%
$2.23↑#24089↓0.19↑28.3 years↑
"Buyback costs cost less."
less."
Raging Battle Mouse76%
$0.22#124270.003.1 years↓
"The second spell you cast each turn costs less to cast."
less to cast."
Highspire Bell-Ringer76%
$0.16↓#109430.001.5 years↓
"The second spell you cast each turn costs less to cast."
less to cast."
Uthros Psionicist76%
$0.22#95840.22↑1.2 years↓
"The second spell you cast each turn costs less to cast."
less to cast."
Helm of Awakening76%
$1.61↑#1927↑0.32↑29.7 years↑
"Spells cost less to cast."
less to cast."
Hardened Berserker74%
$0.04↓#24352↓0.0011.6 years↑
"Whenever this creature attacks, the next spell you cast this turn costs less to cast."
less to cast."
Spellwild Ouphe73%
$0.29↑#16690↓0.0919.5 years↑
"Spells that target this creature cost less to cast."
less to cast."
Sapphire Medallion72%
$7.87↑#354↑0.34↑29.0 years↑
"Blue spells you cast cost less to cast."
less to cast."
Pearl Medallion72%
$7.43↑#429↑0.19↑29.0 years↑
"White spells you cast cost less to cast."
less to cast."
Ruby Medallion72%
$14.07↑#293↑0.28↑29.0 years↑
"Red spells you cast cost less to cast."
less to cast."
Herald of Kozilek72%
$0.36↑#6409↑0.29↑11.0 years↑
"Colorless spells you cast cost less to cast."
less to cast."
Emerald Medallion71%
$5.16↑#582↑0.30↑29.0 years↑
"Green spells you cast cost less to cast."
less to cast."
Urza's Filter70%
$4.88↑#14664↓0.30↑26.0 years↑
"Multicolored spells cost less to cast."
less to cast."
Jet Medallion70%
$13.42↑#274↑0.27↑29.0 years↑
"Black spells you cast cost less to cast."
less to cast."
Vine Gecko70%
$0.19↓#20023↓0.25↑6.1 years
"The first kicked spell you cast each turn costs less to cast."
less to cast."