Does Ixiblat Fer always drop a spell?

[Rathnir]

For a discussion I was having, and couldn't come to a definite conclusion, I thought I would ask the general knowledge base of the server.

My personal suspicion is that he always (100%) drops a single level 60 spell, from a pool of 14 spells. I've had this opinion countered by players that I very much trust to know what they are talking about, but my gut feeling still says he does.

So, as simple as the title: Does Ixi always drop a spell?