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 [Teenage Mutant Ninja Turtles Commander]](http://paradoxtcg.com/cdn/shop/files/679603.jpg?v=1776966122&width=1445)
