Btw i love new guest stars mechanics.i have a suggestion :
Some players have tons of bronze silver and gold key. This keys used for fighter evolve. For evolving guest stars we need some dust. There must have a key converter so we can convert bronze silver and gold key to certain amount of dust like
1bronze key= 30 dust
1silver key = 60
1gold key= 120
1diamond key = 300
Some players have tons of bronze silver and gold key. This keys used for fighter evolve. For evolving guest stars we need some dust. There must have a key converter so we can convert bronze silver and gold key to certain amount of dust like
1bronze key= 30 dust
1silver key = 60
1gold key= 120
1diamond key = 300