Nexon announced on Monday that it would be retiring the MYST-Golf supply case. The MYST-Golf was introduced on 22 September and contained permanent NX rares, including the SCAR-H, the MP5 RAS Centurion, the L96A1 Black-Magnum, and the SAIGA 20k CQB CAMO, as well as a variety of other NX and GP weapons. The MYST-Golf will eventually be replaced by the MYST-Hotel, probably during the next patch. It is not yet known what items the MYST-Hotel will contain.
Read the official announcement here.