Raging Battle Mouse 
Creature — Mouse
$0.24 #12241 0.06 3.0 years
The second spell you cast each turn costs less to cast.
less to cast.Celebration — At the beginning of combat on your turn, if two or more nonland permanents entered the battlefield under your control this turn, target creature you control gets +1/+1 until end of turn.
Click a line or tag to filter
Cards similar to Raging Battle Mouse 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.
Uthros Psionicist100%
$0.31↑#98250.23↑1.1 years↓
"The second spell you cast each turn costs 
less to cast."
less to cast."
Highspire Bell-Ringer100%
$0.17↓#109950.17↑1.4 years↓
"The second spell you cast each turn costs less to cast."
less to cast."
Alisaie Leveilleur92%
$0.32↑#3737↑0.25↑1.2 years↓
"The second spell you cast each turn costs less to cast."
less to cast."
Monk Class84%
$0.41↑#9734↑0.20↑5.1 years↑
"The second spell you cast each turn costs less to cast."
less to cast."
Stone Calendar84%
$14.67↑#20270↓0.48↑32.1 years↑
"Spells you cast cost less to cast."
less to cast."
Memory Crystal78%
$2.14↑#23969↓0.60↑28.2 years↑
"Buyback costs cost less."
less."
Helm of Awakening77%
$1.51↑#1903↑0.36↑29.6 years↑
"Spells cost less to cast."
less to cast."
Naiad of Hidden Coves76%
$0.22↓#103680.52↑6.6 years↑
"During turns other than yours, spells you cast cost less to cast."
less to cast."
Geyser Drake76%
$0.15↓#8498↑0.43↑2.4 years
"During turns other than yours, spells you cast cost less to cast."
less to cast."
Hardened Berserker76%
$0.03↓#24046↓0.0611.4 years↑
"Whenever this creature attacks, the next spell you cast this turn costs less to cast."
less to cast."
Pearl Medallion74%
$5.55↑#454↑0.23↑28.9 years↑
"White spells you cast cost less to cast."
less to cast."
Sapphire Medallion74%
$7.39↑#365↑0.30↑28.9 years↑
"Blue spells you cast cost less to cast."
less to cast."
Ruby Medallion74%
$13.06↑#291↑0.28↑28.9 years↑
"Red spells you cast cost less to cast."
less to cast."
Vine Gecko73%
$0.17↓#19679↓0.25↑5.9 years↑
"The first kicked spell you cast each turn costs less to cast."
less to cast."
Herald of Kozilek72%
$0.37↑#6236↑0.0710.9 years↑
"Colorless spells you cast cost less to cast."
less to cast."
Emerald Medallion72%
$4.07↑#586↑0.20↑28.9 years↑
"Green spells you cast cost less to cast."
less to cast."
Jet Medallion72%
$12.06↑#278↑0.22↑28.9 years↑
"Black spells you cast cost less to cast."
less to cast."
Urza's Filter71%
$4.79↑#144850.35↑25.9 years↑
"Multicolored spells cost less to cast."
less to cast."
Spellwild Ouphe71%
$0.32↑#16327↓0.29↑19.3 years↑
"Spells that target this creature cost less to cast."
less to cast."