Circle of Giltrox

Circle of Giltrox (ギルトロックスの円) was a powerful amulet featured in Silver Days.

The Circle was an ancient artifact belonging to the villain Devastation, which was split into two by Lucas when he defeated Devastation and split him into Zeke and Kody. The two twins later regained a third of the Circle, but the other two pieces remained in Shirou's possession.

Zeke and Kody attempted to recover it, eventually succeeding when Angel captured Silver's family and friends. The two used the Circle to merge back into Devastation but were killed, with the Circle being destroyed by Zen.