OK, so this passage obviously refers to Rand holding Callandor, right? Blade of light, check. Needs 3 channellers to safely use it, check. Simples.

Or is it? I think not. I think the blade of light is actually Rand's new sword, which it's not too big a stretch to suggest is actally some kind of Ter'angreal. Hence blade of light. It will probably glow or something when in use.

Now I think the kind of usage this has is gonna be key to defeating the DO rather than anything else. It's possible the sword can be used to 'Bind the 9 moons' to Rand if it's channelled into and the only reason it wasn't used at their earlier meeting was because the pattern wasn't ready for it yet. As Rand was too dark and the North and East and South and West were not as one yet.

So what about the 3 shall be as one? They discussed this towards the end of tGS but it seems as though they were still wide of the mark. I propose the 'three shall be as one' to be when Egwene, Tuon and Rand (as the 3 leaders of the light side) finally come together and forge a lasting truce/settlement. The fact that Rand holds Artur Hawkwing's old sword 'blade of light' may play a part in bringing Tuon to their side and so fits nicely in the same line as 'three shall be as one' within the KC.

Thoughts?