Yes, it does. I forgot to do so before eating it ("Like sucking on my brain huh? Now I'll have yours!").
Doh!
My wand of wish has 2 charges, so I wished for a pair of levitation boots. I've cleared the first level of Genhennom, right now back in the castle store room to further enchant my stuff.
I am overpreparing it by altar camping. So far I've got Mjolnir, Dragonbane, Firebrand, Frostbrand and Trollbane generated. I wanted to generate Grayswandir to see how great it is. But I guess I'll have to settle with Excalibur + Silver Sabre.
AC is -15, and I've yet to see one magical marker generated. I think before diving deeper into Genhennom, I'll go back to my main stash on DL9 to polypile some. I got a lot of unihorn stashed. I really need the enchanter armor/weapon and fixing.
Edit: This game has a severe lack of identify scrolls, magic markers and magical boots/gauntlets/rings/amulets.
I caved and wished for a cloak of magic resistance and a ring of free action... 2 wishes left, and now I have all the important intrinsics without being crowned. Not much luck getting more enchant scrolls, so most of my items are still unfixed. AC is -17 with a little bit of protection.
And I had yet another encounter with a mind flayer... >_< I remember to use unihorn first this time, so at least I got more Int out of it.