From the supporter page : Pro Token Sets
Exclusive and unique art -- on the house
We work with some great artists on the Marketplace, and we've commissioned some of the best to work for you.
Pro users get access to a vast library with hundreds of tokens
for a wide variety of game types-- there's no faster way to quickly
sample characters from the Marketplace.
Subscribe now to gain access to hundreds of tokens!
Check out all the tokens currently included » The "exclusive" sets should be marked "Purchased" for you, and hence able to be downloaded or located in-game via the Art Library search or the Your Purchases section of Your Library .