Coin of Mastery 
Artifact
$1.51 #4574 0.37 0.6 years
Each creature you control enters with an additional +1/+1 counter on it for each mana from an artifact source spent to cast it.
: Create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")Click a line or tag to filter
Cards similar to Coin of Mastery 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.
Glittermonger85%
$0.23↓#14640↓0.05↓4.5 years↑
": Create a Treasure token."
: Create a Treasure token."
Luke Cage, Hero for Hire85%
$0.43↓#16417↓0.21↓0.3 years
"At the beginning of combat on your turn, create a Treasure token."
Stark Industries Executive82%
$0.14↓#16602↓0.18↓0.3 years
"
, : Create a Treasure token."
, : Create a Treasure token."
Black Market Tycoon82%
$0.27↓#11524↓0.11↓4.5 years↑
": Create a Treasure token."
: Create a Treasure token."
Rakdos Locket80%
$0.21↓#8566↓0.00↓7.7 years↑
": Add 
or 
."
: Add or ."
Rakdos Cluestone80%
$0.19↓#10793↓0.00↓13.5 years↑
": Add or ."
: Add or ."
Hierophant's Chalice79%
$0.23↓#15492↓0.00↓9.1 years↑
": Add 
."
: Add ."
Deadeye Plunderers78%
$0.27↓#16194↓0.00↓9.1 years↑
"
: Create a Treasure token."
: Create a Treasure token."
Seer's Lantern78%
$0.07↓#11084↓0.00↓10.7 years↑
": Add ."
: Add ."
Dungeon Map78%
$0.29↓#8884↓0.00↓5.2 years↑
": Add ."
: Add ."
Infernal Idol78%
$0.19↓#16251↓0.00↓3.9 years↑
": Add ."
: Add ."
Crowded Crypt78%
$0.39↓#2427↑0.19↓5.1 years↑
": Add ."
: Add ."
Bloodstone Cameo78%
$0.28↓#22673↓0.00↓26.0 years↑
": Add or ."
: Add or ."
Galadriel, Gift-Giver77%
$7.33↑#9644↓0.383.3 years↑
"• Create a Treasure token."
Cursed Mirror76%
$0.26↓#427↑0.16↓5.5 years↑
": Add ."
: Add ."
Trove of Temptation76%
$0.17↓#16899↓0.299.1 years↑
"At the beginning of your end step, create a Treasure token."
Noble's Purse75%
$0.52↓#6389↓0.00↓4.4 years↑
", Remove a coin counter from this artifact: Create a Treasure token."
, Remove a coin counter from this artifact: Create a Treasure token."
Gala Greeters75%
$0.54↓#1728↑0.12↓4.5 years↑
"• Create a tapped Treasure token."
Rakdos Keyrune75%
$0.24↓#14437↓0.00↓14.0 years↑
": Add or ."
: Add or ."
Magnifying Glass75%
$0.10↓#9410↓0.00↓10.5 years↑
": Add ."
: Add ."