Coin of Mastery is a rare Artifact card from Magic: The Gathering (Teenage Mutant Ninja Turtles Eternal, TMC). Current market price: $1.37.
Rare
Teenage Mutant Ninja Turtles Eternal (TMC)
{4}
Mana Value
4
Card Text
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.")
