I think that the Nebula Pillar weapons need buffed. I don't really see a use from them, since some other weapons are more powerful than it.
Keybrand isn't even really strong, it's weaker than the Terra Blade and has no ranged ability.Breaker Blade is pretty lame which stinks because it looks so cool. Like by the time I get it I already have my Night's Edge so at that point who cares.
Same with Keybrand, if it's whole thing is its a really strong late game sword but has no secondary effects, I feel it needs to be a bit stronger.