Advice needed: Should I keep and upgrade those rare heroes for old fusion hero?
Hi, everyone,
From the fan page like AyumiLove, it's easy to find out some rare heroes can be fused to a legendary hero, like KANTRA THE CYCLONE or CILLIAN THE LUCKY . The thing is that it seems those fusion only happen once, and unlikely to happen again. Should I keep those heros? or maybe the fusion will be back one day?