[Complete] Scheduled Minor Patch – December 7, 2017

Cadena weapons also dropped from Zakum and Hilla, and can be bought/exchanged from Von Leon, Empress, and CRA.
They can also be crafted.

Illium weapons were only available from the same bosses as Cadena weapons. Not from normal mobs.

Oh, I was under the impression all of illium's weapons were available everywhere.