Summon forth your duck-billed porter. Has retired from locksmithing, so won't be opening any locks for you.
Encountered on the Occult Crescent, this familiar bearing a resemblance to the duckbill (the creature, not the footwear) is believed to have served a sorcerer during the War of the Magi. Originally a locksmith, it has since chosen to become a porter, the better to attend to you.
How to obtain:
Occult Crescent -- Expedition Antiquarian - North Horn - 500 Arcane Amulets
Occult Crescent -- The Forked Tower: Magic
Occult Crescent -- The Forked Tower: Magic (Extreme)