I cast Blade Barrier in a wall in front of me. I then cast another Blade Barrier in a circle shape, so that part of the line intersects with part of the circle.
What happens at these points of intersection? Realistically I would assume 2 walls of blades to tear each other apart, but Pathfinder is mechanical, not realistic. Would a mob passing through this point of intersection take damage from both Barriers, or only one?
I would apply the no-stacking rule from the magic rules for this case :
Stacking Effects
Same Effect More than Once in Different Strengths
In cases when two or more identical spells are operating in the same area or on the same target, but at different strengths, only the one with the highest strength applies.
Then your Blade Barriers don't add up on the tiles where they intersect . Treat them as if only one Blade Barrier was there.
