@ZOS_GinaBruno, I've probably done around 350-400 runs of COA1 and this still hasn't dropped for me or anyone in my groups - that I'm aware of anyway as I offer a lot of gold. The closest I've got to it is a Training one
wtffff
I'm currently sitting at over 4,500 drops ((375 runs x 4ppl) + (375 x 2 chest average per run x 4ppl)) without it. Is this sort of drop rate intended or what? How many more runs must I do before I get it.. 50, 100, 300, 500, 1,000?