Suddenly Famine Manuscripts

I was sifting through my enchanting materials today when I found something that most certainly was not there the last time I checked: a stack of 16 Famine Manuscript, a legendary material that give the ability Inspirit (when one of your creatures is healed, this creature gains 20% attack).

I’ve never even heard of this before, and I don’t have more than five of any other legendary material. Where did this come from? What does it mean?

It was previously impossible to acquire thanks to a bug - probably an overlapping item number that converted it into something else. Zack must have stealthfixed it.

Ah.
Cool.
Transmutation fodder.
Thanks Zack!

BUT YOU CAN USE IT WITH BEARER OF NEEDS :’(