A new _ and probably not too_ cracked theory (slightly big spoiler about TTM) about Season 4, the sky and the stars
I was re-hearing the 1st episode of HBMP, and I took notice of something that didn’t hit me the first time: A.Ehasz said that the sky and the stars are linked (like the sun and the moon, the ocean and the earth).
And guess what? Callum’s spellsbook:
Vision!
Sooo, vision, like "seeing things"? Future? Past? Present?
After Rayla's departure in TTM, Callum has no idea of where she is and no human way to track her. After all, she only said she saw Viren’s alive.
Plus, Corvus is good but not here and by the time he would joined them, the track would have already disappear, if Rayla hasn’t already take care of them.
So Callum goes “after her”, which could mean where Viren was last seen => the Storm Spire. Or he’s just in need to someone for help? (Zubeia? Ibis?) For a tip or something? (since he’s at the storm spire...)
And then, they talk about a way to find her. You know... that... kind of... mirror of Galadriel, here:
Because it's the sky nexus and it's a good place to have a vision? And as the sky is connected to the stars, maybe he'll see Aaravos? and/or Viren? And understand the latter is alive and so that Rayla is in danger?
because if that basin-thing isn’t for visions, then what for? For birds to take a bath?