"This staff is a peculiar thing. We have long been tought that Dryads do not get attached to physical objects, and yet this staff clearly was of some value to Tadeas."
Bind On PickupTierVScales With:FOC 100%7.0Weight3000Durability
We can't find any source for this item (quests reward, drop, etc). It's highly probable this item is not obtainable right
now.
It seems that the New Tadeas's Curious Staff is obtainable.