Welcome back.
There were some much-needed progress made regarding the clues for the 3rd Herb.

The lost page of the archive was found at a rather interesting place. Mr. Wetbottom, who stays at the VIP Sauna, well, his ancestry had it.
Observing only far objects like a lighthouse, your focus does not match right when looking close. I think it means assuming someone's personality based on the appearance is never a good thing.

Now, onto the real thing, I really don't think we can easily obtain this, either. The skills behind the 3rd Herb reads like this.

...
What kind of an ominous herb is this?? This herb cannot be placed near a human being, so seal up the force in a spherical object, and never let it see the day of light again...

That's what it says here. Compared to the herbs before this, I really don't have much counted on this, but I really do not want to give up on this right now, just because of the more treacherous path it leads to obtain it.

For someone like you, who found 2 of 3, I am confident that you can find the 3rd one. I will spare no expense in searching for this Herb. We're here, so might as well finish the job, right?

Good luck, committee member!
All hail the Committee!

I knew you wouldn't say no. From a personal point of view, I believe that Herb possesses incredible magical power, coupled with the fact that it's been sealed so no amount of force may leak out. Even after we find it, we'll have to take care of it in a very delicate matter.

Alright, good luck.

There's nothing to fear here.
The ones written in the archive may look astounding, but I don't think they can be called the herbs laden with spells. Do you want to change your mind?

How did it go? Did you find the 3rd Herb?

Hmmm, so you're telling me Lazy Buffy Marble is the herb?

Ahh, I see I see! I thought this was nothing more than a hat accessory, but this was in fact possessed by the Lazy Buffy. Yes, I can feel the force from here. I can't believe the 3rd Herb is actually inside this.

Wait, something that cannot be next to humans... hmmm ... I see! I have no idea how to remove this. The outer layer is thinly covered by another layer, and I can't even touch it. The herb is definitely being sealed up inside the marble...! Pretty much what the archive said came true.

Is this it...?

No, not yet. It's too early to give up on this. It may have been impossible to remove the sphere back in the day, but if we apply modern science to this, then...!

Committee member! Can you please find a way to remove the herb from the sphere? I have no idea who's currently practicing modern science. Please find out for me. This is the money you may need to locate that person. Good luck.