Arcane Stars can be upgraded directly with Silver or Gold Tokens, purchased with Arcane Coins. There is a special Market in the game where you can exchange the Arcane Coins for Silver or Gold Tokens.
 
NOTE: the number of slots on the Market depends on the player level.
 
There are 2 types of Tokens for upgrading Arcane Stars:
  • Silver Tokens are used for upgrading characters with 1, 2, 3, 4 or 5 Arcane Stars.
  • Golden Tokens are used for upgrading characters with 6 or 7 Arcane Stars.
IMPORTANT: If you do not have heroes with 5 or 6 Arcane Stars, you will not have access to lots for Golden Tokens on the Token Market.
 
NOTE: the Tokens allow to upgrade the character directly with one Arcane Star more only.
 
The ways to get the Tokens:
  • exchanging the Arcane Coins
  • Tournament rewards.