Bell makers guild

A guild of bell makers, they have a special sect though who make bells of summoning
They arectasked by Quill, Cultist of Demogorgon  to make 13 bells to summon Lord Kargoth  in Pilgrimage to Ethbir part 3 
They are a powrtfull guild who can make bells to
Summon, people monsters etc from the current world, the dead and even other planes.
They keep expanding knowledge with a search for ancient texts and knowledge from good and evil...
Also,
The bells can make
Enchanting notes Conjur visions of beauty in churchs Break things with key notes Create earth quakes....