[Soapy]

Artificer tomes are still considered projectiles when transformed.

Given the description, I feel like this isn't intentional, but I don't know for sure.

A type of artificer tome that creates magical rods. It can even change into one itself.

[Snake]

Well, a Tome's basic hit have always counted as a projectile, as far as I remember. The Bell monster's passive only works in projectiles too, and that's been around for a while. Though, I do agree it could get a change, maybe for those weapons only?

[Neus]

We're missing some key details here, as usual, like how you tested this.

[Soapy]

A transformed Rexys will trigger Spirit Mirror, for example.

[Neus]

This has been corrected.

[Soapy]

It hasn't.

[Neus]

Not very helpful. Would like to know if you used the same conditions to test it, and if you were selecting the attack skill from the hotbar or from the menu, and if there's any difference between the two. As well as if you're absolutely sure it was transformed at the time.