How do I get elite version mutants?

Elite version mutants are always bread thanks to Bronze, Silver or Gold Stars.

In order to do this you need to follow those basic rules:

• To get a bronze mutant you will need to cross-breed 2 creatures of level 10 or above, adding a bronze star to your breeding.
• To get a silver mutant you will need to cross-breed 2 bronze creatures of level 15 or above, adding a silver star to your breeding.
• To get a Gold mutant you will need to cross-breed 2 silver creatures of level 20 or above, adding a gold star to your breeding.

Stars can be bought in-game, won in PVE and PVP as well as available when cross-breeding your mutants.