Cocytus

"Cocytus" (コキュートス Kokyūtosu) is a series of Skeleton cards that include "Cocytus" in its card name, exclusive to the Granblue clan, and introduced in Booster Set 6: Breaker of Limits.

Grade 3
Grade 4

Grade 1

 * Dragon Spirit

Grade 2

 * Skeleton Demon World Knight