Blade Adept Black Blade + Occultist Legacy Weapon Question

[MCPooge]

Hello!

So I have dug around, and it seems like the Blade Adept Arcanist archetype has fallen out of popularity lately so there isn't a lot of information about its interactions with newer material.

I am wondering whether the Occultist Legacy Weapon ability can be used to temporarily grant the Black Blade enhancements.

The old FAQ about the black blade says the following:

FAQ
Magus, Black Blade: Can I use Craft Magic Arms and Armor to increase my blade's enhancement bonus?
No, nor can you use that feat to add other properties (such as flaming) to the black blade. You can use your arcane pool to temporarily add abilities to your black blade.

It doesn't say "only" your arcane pool to add abilities, but I don't know if that can be extended to say "arcane pool-like class features."

I appreciate any insight!

[Volkard Abendroth]

You cannot use the crafting rules to upgrade a Black Blade.

This is a very specific ruling that applies only to that specific set of rules. Anything else still applies. (E.g. Divine Bond, Fiendish Boon, Warrior Spirit.)

[Gisher]

Volkard has it right. The Black Blade can't be modified by crafting (it's sort of a creature in weapon form, after all), but nothing prevents you from using other options to temporarily add Enhancements or Special Abilities. I keep a little list of such options.