With one of the cloak kills, he dropped an "Cialin's Ice Staff" with no stats. Possible quest item...
Cialin's Ice staff along with 3 Fetishes of Ice Mastery result in a 12 AC , 6 Dex , 7 Sta , 6 Cha , 8 Wis , 12 Disease , 12 Magic , 12 Poison , 50 HP , 75 Mana SHoulder slot item ( Cleric , Druid , Shaman Only).
Now in the updated Droga, not Legends-only any more. Drops off Ice Master Something in the room where the old Droga boss lived.
Ice Master dropped a cloak both times he spawned, in about 3 or 4 hours. No idea if other named ones can spawn in same area. This guy was in the side room, not up on the platform. I suspect another named can spawn there from placeholders.