Thread:Sk3284/@comment-31183121-20170129204000/@comment-24739965-20170129210613

Right now, the LZ Bosses and Named Enemy drops from missions are currently the only way to get Named Weapons. Remember that it has a 5% drop chance.

In Update 1.6, the Caduceus will be considered an Exotic, and will be obtainable from Exotic Caches in addition to the drop locations I previously mentioned.

It just seems that you have very bad luck at it; I never got the Caduceus either, so you just got to keep farming.