Dropped by (***no spawn table):

• Iceclad Ocean
• a frost giant scout (1.3%)
• a shadow guardian (1.1%)
• Graktar Bluehammer (1.4%, 0.014 avg drops per kill)
• a snow dervish (0.31%)
• pulsating icestorm (16%)
• Eastern Wastes
• a snow dervish (11%)
• a blizzard dervish (15%)