Sry but the "I looked on wiki statement" won´t cut it here.
Read it again: It says droped from an "obsidian chest" which means non-inscriptible.
You know that those wiki-sites are written by GW-players and as long as no one disputes the statements, they are there forever.
For years inofficial-wiki said that celestial compass and dragon shield will drop in Dalada Upland, which turned out to be one of the most brilliant scams I know of. Thounsands of pugs ran this area ...
FoW-Chest is heavily farmed since the uw-update. Even by myself. Never saw one drop.
I know that there are "some" of the non-primaries shaddow staffs out there, but look in ventary´s corner or any other gw auction house. Where are they?
Inscriptible fire or curses is always useful. Why sell divine offering / soulreaping etc. but throw away the "good" attributes.
Makes no sense.
This staff is ultra-rare.
More opinions?
Muh