The Night's Watch itself being the Lightbringer doesn't make much sense for me. They have nothing in common, besides the sword and its legend has been described quite in details.
I think the Hammer of the waters is a spell, but not the kind of spell that the Children of The Forest has a real control over. Since they failed to use it, creating the swamp.
If Bran ever manages to do that as a last resort action against the Others, I don't know if they can swim, but it seems pretty sure they won't die from drowning. I don't think we'll see this kind of power at such big scale again, maybe Bran would be able to use a lesser version, with better results on a smaller aera.
The Hammer could be extremely difficult to pull off, or the ritual could have been disrupted I suppose. But Bran seems to be building up as the greatest prodigy in ages (perhaps ever) in terms of greenseeing. I don't think it's a coincidence that he's not had a POV in 600+ pages. GRRM is building up for something epic.
And I don't think they would cross a huge water. The first Hammer made a giant hole between the continents, if Bran even makes a lesser version than that it'll be impossible to cross without a form of transportation. Besides, if the Others can cross water why don't they just swim/cross around the Wall? Surely its magic does not work far off the coast, and on the west side it's not even walled but simply a dangerous mountain range that separates the North and Beyond the Wall. If the wildlings can get over there, a race described as "not even breaking the snow when they walk on it" and that are generally super agile would surely be able to cross the range. In fact it almost seems like a plot hole that they don't, unless the Wall's magic works in the mountains too, or the Milkwater is simply too large to cross without transportation.
Oh. I forgot to add that I meant that Jon won't really have a family on his own, like a wife, children etc. Being on the Night's watch didn't settle it once for all since he could go away from it as it happened with Ygritte. But becoming an undead seems to close the possibility of a future beyond his current adventure.
About this guy's theory : how are we supposed to interpret the whole wife soul being fused with the weapon to make turn it into Lightbringer ? It's not like every man in the Night's Watch has a wife they hold dear and took this duty for their sake.
Bran using a lesser version doesn't mean he has to use it to make holes. With this kind of power you can make different kind of natural barrier or weapon, depending the area.
About the wildings : the moutains may be too large and hostile for them or they're superstitious.
It's not the mountains, it's the Gorge. The wildlings failed passing the Bridge of Skulls, but I guess they weren't really trying to since it was just a diversion to draw forces away from Castle Black for Mance's attack.
In any case, whether Others can cross the Gorge or not is anyone's guess.
---------- Post added at 02:17 AM ---------- Previous post was at 01:02 AM ----------
Don't get it anyway
Doctor House.... The TV series. Slow.
Oh fuck...I saw Lupus and thought maybe it was from Harry Potter. I think there was some character with that name.
But I do remember that theme now...plus the cane...makes sense
Care to explain?
Nope...that is your just desserts
maybe there's someone more nice and caring who will