Guys I need help

[D4C]

My English is bad, so I hope you can understand me. 

I got a rare item, but I don't know what it is. It’s not in the workshop, I tried to find it somewhere else but it didn’t work. I was very stupid because I didn’t take a screenshot, and I also didn’t remember the name of the item. It looked like some kind of crystal with metal things on the sides, I don’t remember exactly, but in the name of the item contained the word  “set”, I’m not sure it was there, so sorry if that’s the case. Help me understand what I got

[JamAnime]

Sounds like a yellow transform relic.  They are used for upgrading a legendary item to mythical. So, 5 items to up a legenday to mythical. It's an extra item, instead of using battle items. You will find it in upgrading.

 

Edited March 16 by JamAnime (see edit history)