Each creature you control enters with an additional +1/+1 counter on it for each mana from an artifact source spent to cast it.
T: Create a Treasure token. (It's an artifact with "T, Sacrifice this token: Add one mana of any color.")
Nowhere else can one coin buy you a second chance.
![Coin of Mastery (Surge Foil) [Teenage Mutant Ninja Turtles Commander]](http://www.dungeonsandjavas.com/cdn/shop/files/mtg_placeholder_d66e5ebc-99d7-4380-a4a5-9bd641df8bc8.png?v=1776965531&width=1445)
