Farming Solist's Icy Wand?

[Ocelo]

So I played a Wizard as my alt back on live and before I rolled him up I made sure I had a Solist's Icy Wand. I farmed up the wand with my main (a Monk) in the basement of Kurn's tower and I honestly don't remember how many mobs I killed down there before one dropped but I do remember that I killed a LOT of those Burynai Excavators.

The wiki is a bit vague on what mobs drop the wand. I see 3 mobs listed, but under the descriptions, the wand is not always on the loot table?

How many Excavators can one expect to kill before seeing one? I read elsewhere that a guy killed 11,000 before one dropped. Really? ouch.