[Eomer of the Rohirrim]

There's something that doesn't quite fit in my theory, though, which is rather annoying.

If indeed Rikae was the Seer, and, upon the Seer's death the last two dreams were sent to Unknown-Power-Nerwen, then wolf-Mac doesn't suit. Rikae specifically lumped Mac in with Agan and Morm as innocent during Day 2 - she certainly didn't dream about Loslote and Mac on the same night.

It might then be more likely that Legate was the Seer.

Or this could all just be way off, of course..