There will be a faction war at a later date. I dont know exactly how it will work, but I assume you need to use teams of champions from the same faction. Besides, they rebalance champions occasionally as well, maybe the ones underwhelming now, becomes useful in the future. Keep them!

Hello

I have a stockpile of champions in my vault for the sole factor of fusions, which include up to 40 epics that I'm not personally interested in making for so many reasons at the moment. but like previously said the game may change whether a buff to those champions make then interesting again or new game modes. 

the Vault was a welcomed feature when added for this exact reason.

regards

I used them for food. Some epic champion are useless and even weaker than rare champion. 

Thanks for all the feedback.  After a little experimentation, I came to realize that my best bet currently is to utilize the higher rated champion to clear content for artifacts and coins. 

From some of the feedback from you guys here, it seems like as time goes on, I will eventually start getting enough high level champions that I will have more versatility in who I choose.  Currently, I only have three four-star champions.  So, pretty much having to utilize Atur to clear higher-level content for more coins and artifacts.

Have to say though, it seems like "defense" and "support" champions like Shaman and Jizoh are FAR more useful than an "attack" like Atur.  From battles, it looks like both Jizoh and Shaman do just as much damage as Atur, but they apply more useful buffs/debuffs than Atur.

Atur is far better than Jizoh and Shaman. I'd say hes top epic Champion for arena.