Looking for a monster.

[phelan074]

I'm trying to find a monster I read about a few years ago. The species collected magic item and held them in a vault on some plane. Only other thing i remember is that it was weightless inside the vault that they used. anyone know what I'm looking for?

 

[ksbsnowowl]

Tomb Tapper, Monsters of Faerun, p. 82

IIRC, it was also updated to 3.5 in the back of Lost Empires of Faerun. Edit: p. 189