Does the Lead Blades spell and the Impact magic weapon special ability stack?

[DarthEnder]

Crash_00 wrote:

Lead Blades does not go away, but it is not affecting the weapon when the weapon is not on you.

Yes it is. It never says the effect stops when you let it go. It just says the effect doesn't work for anyone else. So the effect is still running, it just doesn't do anything when anyone else tries to swing it.

And since it doesn't drop when you drop it, it can't "come back" just cause you pick it back up.

Which is why you can put Lead Blades on, for example, a throwing axe and it still works when you throw it. Because the effect works for you whether the weapon remains in your hand or not. All that matters are which weapons you are carrying when you cast it.

Pathfinder Design Team wrote:

FAQ: http://paizo.com/paizo/faq/v5748nruor1gg#v5748eaic9qx4

Weapon Special Ability, Impact: Does this stack with the lead blades spell?

No. The weapon special ability and the spell are similar effects; note that impact lists lead blades as a construction requirement.

Yay!

I wish that ruling specified more than just those two effects though. Be nice if it mentioned things like Strong Jaw and Improved Natural Attack as well.

[Crozekiel]

I know this is an old thread, but some things still bother me...

Peet wrote:

As far as I know, both lead blades and impact cause the weapon to be treated as one size larger than it actually is for the purpose of damage. Neither effect changes the actual size of the weapon.

As a result, casting lead blades on an impact weapon would have no effect, since it simply duplicates an ability the item already has.

This seems to be the best explanation of why they don't stack.

First of all, the people comparing this situation to bull's strength spell and a belt of giant's strength seem to be completely ignoring the fact that both the spell and item in that scenario give enhancement bonuses. Impact and leaf blade don't give named bonuses.

The official answer in the FAQ bothers me because if you can't stack a weapon magic effect with any spell used (or could be used) to create it, then why does the haste effect have a disclaimer in the wording for it? I agree that impact and leaf blade don't stack, for the reason quoted above, but that FAQ answer, for me, just brings up many more questions...