Utility of duplicate champions?

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Starting the game, I got Iron Man 1*, then at the end of the tutorial, I got a bonus 2* crystal, which gave me a 2* Iron Man.
Despite having two Iron Man in my team, is there any utility to have duplicate champions? Like echanging one for another hero, or fusing them for a more powerful Iron Man?
Best Answer
Additional utility is only gained if the champions have the same number of stars. In this case they gain abilities which become more powerful with more duplicates.
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What should I do with duplicate Champions raid?
Duplicate Champions will be turned into Gold, higher-tier crystal shards, and class ISO-8 that are specific to the class of that Champion. Duplicate Champions can also potentially unlock or upgrade the signature abilities of that Champion.RAID: Shadow Legends | Duplicate Champions Solution Preview
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