Mugs are a type of rare resources. Its used are to exchange for a random amount of Rings or Souls.
Obtaining Mugs[]
Mugs are gain from getting a 3-star victory for the first time in a dungeon in Solo Campaign. It is also randomly awarded to the player when opening a reward chest after winning a Solo Campaign.
Spending Mugs[]
Currently, mugs are only spent at The Cat's Meow and the Dancing Dragons for getting Rings and Souls respectively.