The Mask of Horror is a valuable artifact which belonged to
Gnomes during
Era of Change.
Mask of Horror, just like other artifacts such as
Bravado Helmet,
Path of Valor Statuette,
The Klesh Sarcophagus and the
Goblet of Baddukh, is very valuable for antiquarians.
If you give Mask of Horror to your local antiquarian, he'll reward you with
Contaminated Flying Dust. You will also get 20 reputation of
Relic Seekers, up to 2500.
You can obtain Mask of Horror in various ways:
1. Gnome Runes
counterfeits;
2. Gnome Caskets (from original
Gnome Runes);
3. Smuggled Bag during "
Profitable Deals with Smugglers" event;
4. Buy it on auction or exchange.