Aurinax is an Adult Gold Dragon. He often assumes the form of an elderly gold dwarf named Barok Clanghammer, who uses the dragonstaff of Ahghairon as a walking stick
This was given to the dragon by Dagult Neverember, Open Lord of Waterdeep and has the power to prevent other dragons from entering the city.
In exchange for the staff, Aurinax has promised to guard a vault and it's treasures beneath the city until such a time as Neverember or his appointed vassals removed it
As it happens no one has come to remove the treasure and the faithful Aurinax has remained in the vault. The vault is warded against scrying magic, and there is no one left in Waterdeep who knows about Aurinax.
Or the whereabouts of the dragonstaff
Please note: Miniature is supplied unpainted and some assembly will be required.