Not 100% sure if this is a bug, but so far, leveling up a fresh barbarian, I'm now 113, and I've gotten probably 20 Vizjerei Judgment sorceress amulets. 2, maybe 3 other set items, but at least 15-20 of those amulets. Not a bug. Level 80-90 it's the only set item that can drop, and before Duncraig ...