So I've been doing some research on Arvandor lately, and I can't really find anything about Rillifane Rallathil anywhere. Maybe I haven't looked in the right places yet, though.
His name is mentioned in the Book of Chaos as one of the powers in Arvandor, but there's no mention of him beyond that. He's not in On Hallowed Ground, not even on the map or in an index.
Does anyone know where or how he is in Arvandor? I know he's described as a great plane-spanning oak tree in some sources, but the only giant oak worthy of note in Arvandor is Grandfather Oak. I can't help but wonder if that might be him (Grandfather Oak is staggeringly old), but Grandfather Oak's high-up is a treant. Maybe it's just a misconception, but why would it be kept a secret that Grandfather Oak is a god?
I'm wondering if maybe Rillifane slipped through the cracks during publication of On Hallowed Ground like he did with Monster Mythology. Or maybe it's some weird ode to the slip-up with MM?
Any insight or direction would be appreciated.