Renstorm, To find the altars just pay attention to Prof Holly's party and Kolink's farm. Hint you don't have to feed anything. Just read custom descriptions and logs.
My scour luck is always awful. I doubt I'd find the orb but thank you very much for the info.
I'm still stuck at the unown quest's final step.
"To begin this Quest, simply buy an Unown Report from the Shop. You must battle the legion to acquire the key, thus solving the Mystery of the Unown."
How do I "battle the legion"?